diff --git a/src/modules/module_01500.c b/src/modules/module_01500.c
index 563d9bfac..e97267a92 100644
--- a/src/modules/module_01500.c
+++ b/src/modules/module_01500.c
@@ -124,9 +124,38 @@ char *module_jit_build_options (MAYBE_UNUSED const hashconfig_t *hashconfig, MAY
 {
   char *jit_build_options = NULL;
 
-  if ((user_options->attack_mode == ATTACK_MODE_BF) && (hashes->salts_cnt == 1) && (user_options->slow_candidates == false))
+  // Extra treatment for Apple systems
+  if (device_param->opencl_platform_vendor_id == VENDOR_ID_APPLE)
   {
-    hc_asprintf (&jit_build_options, "-DDESCRYPT_SALT=%u", hashes->salts_buf[0].salt_buf[0] & 0xfff);
+    if ((user_options->attack_mode == ATTACK_MODE_BF) && (hashes->salts_cnt == 1) && (user_options->slow_candidates == false))
+    {
+      hc_asprintf (&jit_build_options, "-DDESCRYPT_SALT=%u", hashes->salts_buf[0].salt_buf[0] & 0xfff);
+    }
+
+    return jit_build_options;
+  }
+
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    if ((user_options->attack_mode == ATTACK_MODE_BF) && (hashes->salts_cnt == 1) && (user_options->slow_candidates == false))
+    {
+      hc_asprintf (&jit_build_options, "-DDESCRYPT_SALT=%u -D _unroll", hashes->salts_buf[0].salt_buf[0] & 0xfff);
+    }
+  }
+  // ROCM
+  else if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == true))
+  {
+    if ((user_options->attack_mode == ATTACK_MODE_BF) && (hashes->salts_cnt == 1) && (user_options->slow_candidates == false))
+    {
+      hc_asprintf (&jit_build_options, "-DDESCRYPT_SALT=%u -D _unroll", hashes->salts_buf[0].salt_buf[0] & 0xfff);
+    }
+  }
+  else
+  {
+    if ((user_options->attack_mode == ATTACK_MODE_BF) && (hashes->salts_cnt == 1) && (user_options->slow_candidates == false))
+    {
+      hc_asprintf (&jit_build_options, "-DDESCRYPT_SALT=%u", hashes->salts_buf[0].salt_buf[0] & 0xfff);
+    }
   }
 
   return jit_build_options;
diff --git a/src/modules/module_03000.c b/src/modules/module_03000.c
index 5cf3e2b5e..e98cb294c 100644
--- a/src/modules/module_03000.c
+++ b/src/modules/module_03000.c
@@ -48,6 +48,37 @@ u32         module_salt_type      (MAYBE_UNUSED const hashconfig_t *hashconfig,
 const char *module_st_hash        (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_HASH;         }
 const char *module_st_pass        (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_PASS;         }
 
+char *module_jit_build_options (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hashes_t *hashes, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  char *jit_build_options = NULL;
+
+  // Extra treatment for Apple systems
+  if (device_param->opencl_platform_vendor_id == VENDOR_ID_APPLE)
+  {
+    return jit_build_options;
+  }
+
+  // Intel CPU
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  // AMD-GPU-PRO
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  // ROCM
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == true))
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  return jit_build_options;
+}
+
 u32 module_kernel_threads_max (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u32 kernel_threads_max = 64; // performance only optimization
@@ -212,7 +243,7 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_hook23                   = MODULE_DEFAULT;
   module_ctx->module_hook_salt_size           = MODULE_DEFAULT;
   module_ctx->module_hook_size                = MODULE_DEFAULT;
-  module_ctx->module_jit_build_options        = MODULE_DEFAULT;
+  module_ctx->module_jit_build_options        = module_jit_build_options;
   module_ctx->module_jit_cache_disable        = MODULE_DEFAULT;
   module_ctx->module_kernel_accel_max         = MODULE_DEFAULT;
   module_ctx->module_kernel_accel_min         = MODULE_DEFAULT;
diff --git a/src/modules/module_05200.c b/src/modules/module_05200.c
index 7c50b5d47..9cd198e98 100644
--- a/src/modules/module_05200.c
+++ b/src/modules/module_05200.c
@@ -59,6 +59,37 @@ typedef struct pwsafe3_tmp
 
 static const char *SIGNATURE_PSAFE3 = "PWS3";
 
+char *module_jit_build_options (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hashes_t *hashes, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  char *jit_build_options = NULL;
+
+  // Extra treatment for Apple systems
+  if (device_param->opencl_platform_vendor_id == VENDOR_ID_APPLE)
+  {
+    return jit_build_options;
+  }
+
+  // Intel CPU
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  // NVIDIA GPU
+  if (device_param->opencl_device_vendor_id == VENDOR_ID_NV)
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  // ROCM
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == true))
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  return jit_build_options;
+}
+
 u32 module_pw_max (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u32 pw_max = PW_MAX;
@@ -185,7 +216,7 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_hook23                   = MODULE_DEFAULT;
   module_ctx->module_hook_salt_size           = MODULE_DEFAULT;
   module_ctx->module_hook_size                = MODULE_DEFAULT;
-  module_ctx->module_jit_build_options        = MODULE_DEFAULT;
+  module_ctx->module_jit_build_options        = module_jit_build_options;
   module_ctx->module_jit_cache_disable        = MODULE_DEFAULT;
   module_ctx->module_kernel_accel_max         = MODULE_DEFAULT;
   module_ctx->module_kernel_accel_min         = MODULE_DEFAULT;
diff --git a/src/modules/module_08200.c b/src/modules/module_08200.c
index 0c1cbfde6..fffa11d5c 100644
--- a/src/modules/module_08200.c
+++ b/src/modules/module_08200.c
@@ -58,6 +58,25 @@ typedef struct pbkdf2_sha512_tmp
 
 } pbkdf2_sha512_tmp_t;
 
+char *module_jit_build_options (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hashes_t *hashes, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  char *jit_build_options = NULL;
+
+  // Extra treatment for Apple systems
+  if (device_param->opencl_platform_vendor_id == VENDOR_ID_APPLE)
+  {
+    return jit_build_options;
+  }
+
+  // Intel CPU
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  return jit_build_options;
+}
+
 u64 module_esalt_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u64 esalt_size = (const u64) sizeof (cloudkey_t);
@@ -271,7 +290,7 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_hook23                   = MODULE_DEFAULT;
   module_ctx->module_hook_salt_size           = MODULE_DEFAULT;
   module_ctx->module_hook_size                = MODULE_DEFAULT;
-  module_ctx->module_jit_build_options        = MODULE_DEFAULT;
+  module_ctx->module_jit_build_options        = module_jit_build_options;
   module_ctx->module_jit_cache_disable        = MODULE_DEFAULT;
   module_ctx->module_kernel_accel_max         = MODULE_DEFAULT;
   module_ctx->module_kernel_accel_min         = MODULE_DEFAULT;
diff --git a/src/modules/module_08500.c b/src/modules/module_08500.c
index b39cd7c14..974cd8e0b 100644
--- a/src/modules/module_08500.c
+++ b/src/modules/module_08500.c
@@ -44,6 +44,31 @@ const char *module_st_pass        (MAYBE_UNUSED const hashconfig_t *hashconfig,
 
 static const char *SIGNATURE_RACF = "$racf$";
 
+char *module_jit_build_options (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hashes_t *hashes, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  char *jit_build_options = NULL;
+
+  // Extra treatment for Apple systems
+  if (device_param->opencl_platform_vendor_id == VENDOR_ID_APPLE)
+  {
+    return jit_build_options;
+  }
+
+  // Intel CPU
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  // AMD-GPU-PRO
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  return jit_build_options;
+}
+
 u32 module_pw_max (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u32 pw_max = 8; // Underlaying DES max
@@ -213,7 +238,7 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_hook23                   = MODULE_DEFAULT;
   module_ctx->module_hook_salt_size           = MODULE_DEFAULT;
   module_ctx->module_hook_size                = MODULE_DEFAULT;
-  module_ctx->module_jit_build_options        = MODULE_DEFAULT;
+  module_ctx->module_jit_build_options        = module_jit_build_options;
   module_ctx->module_jit_cache_disable        = MODULE_DEFAULT;
   module_ctx->module_kernel_accel_max         = MODULE_DEFAULT;
   module_ctx->module_kernel_accel_min         = MODULE_DEFAULT;
diff --git a/src/modules/module_10400.c b/src/modules/module_10400.c
index 0d683dc1d..60f3f28d8 100644
--- a/src/modules/module_10400.c
+++ b/src/modules/module_10400.c
@@ -64,6 +64,37 @@ typedef struct pdf
 
 static const char *SIGNATURE_PDF = "$pdf$";
 
+char *module_jit_build_options (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hashes_t *hashes, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  char *jit_build_options = NULL;
+
+  // Extra treatment for Apple systems
+  if (device_param->opencl_platform_vendor_id == VENDOR_ID_APPLE)
+  {
+    return jit_build_options;
+  }
+
+  // Intel CPU
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  // NVIDIA GPU
+  if (device_param->opencl_device_vendor_id == VENDOR_ID_NV)
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  // ROCM
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == true))
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  return jit_build_options;
+}
+
 u64 module_esalt_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u64 esalt_size = (const u64) sizeof (pdf_t);
@@ -345,7 +376,7 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_hook23                   = MODULE_DEFAULT;
   module_ctx->module_hook_salt_size           = MODULE_DEFAULT;
   module_ctx->module_hook_size                = MODULE_DEFAULT;
-  module_ctx->module_jit_build_options        = MODULE_DEFAULT;
+  module_ctx->module_jit_build_options        = module_jit_build_options;
   module_ctx->module_jit_cache_disable        = MODULE_DEFAULT;
   module_ctx->module_kernel_accel_max         = MODULE_DEFAULT;
   module_ctx->module_kernel_accel_min         = MODULE_DEFAULT;
diff --git a/src/modules/module_10410.c b/src/modules/module_10410.c
index d641ae03c..998a79b4a 100644
--- a/src/modules/module_10410.c
+++ b/src/modules/module_10410.c
@@ -65,6 +65,37 @@ typedef struct pdf
 
 static const char *SIGNATURE_PDF = "$pdf$";
 
+char *module_jit_build_options (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hashes_t *hashes, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  char *jit_build_options = NULL;
+
+  // Extra treatment for Apple systems
+  if (device_param->opencl_platform_vendor_id == VENDOR_ID_APPLE)
+  {
+    return jit_build_options;
+  }
+
+  // Intel CPU
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  // NVIDIA GPU
+  if (device_param->opencl_device_vendor_id == VENDOR_ID_NV)
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  // ROCM
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == true))
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  return jit_build_options;
+}
+
 u64 module_esalt_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u64 esalt_size = (const u64) sizeof (pdf_t);
@@ -365,7 +396,7 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_hook23                   = MODULE_DEFAULT;
   module_ctx->module_hook_salt_size           = MODULE_DEFAULT;
   module_ctx->module_hook_size                = MODULE_DEFAULT;
-  module_ctx->module_jit_build_options        = MODULE_DEFAULT;
+  module_ctx->module_jit_build_options        = module_jit_build_options;
   module_ctx->module_jit_cache_disable        = MODULE_DEFAULT;
   module_ctx->module_kernel_accel_max         = MODULE_DEFAULT;
   module_ctx->module_kernel_accel_min         = MODULE_DEFAULT;
diff --git a/src/modules/module_10500.c b/src/modules/module_10500.c
index 68975507a..54b1a770e 100644
--- a/src/modules/module_10500.c
+++ b/src/modules/module_10500.c
@@ -88,6 +88,31 @@ static void md5_complete_no_limit (u32 digest[4], const u32 *plain, const u32 pl
   digest[3] = md5_ctx.h[3];
 }
 
+char *module_jit_build_options (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hashes_t *hashes, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  char *jit_build_options = NULL;
+
+  // Extra treatment for Apple systems
+  if (device_param->opencl_platform_vendor_id == VENDOR_ID_APPLE)
+  {
+    return jit_build_options;
+  }
+
+  // Intel CPU
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  // ROCM
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == true))
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  return jit_build_options;
+}
+
 u64 module_esalt_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u64 esalt_size = (const u64) sizeof (pdf_t);
@@ -471,7 +496,7 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_hook23                   = MODULE_DEFAULT;
   module_ctx->module_hook_salt_size           = MODULE_DEFAULT;
   module_ctx->module_hook_size                = MODULE_DEFAULT;
-  module_ctx->module_jit_build_options        = MODULE_DEFAULT;
+  module_ctx->module_jit_build_options        = module_jit_build_options;
   module_ctx->module_jit_cache_disable        = MODULE_DEFAULT;
   module_ctx->module_kernel_accel_max         = MODULE_DEFAULT;
   module_ctx->module_kernel_accel_min         = MODULE_DEFAULT;
diff --git a/src/modules/module_14000.c b/src/modules/module_14000.c
index bb55b36ec..a26ce6cf1 100644
--- a/src/modules/module_14000.c
+++ b/src/modules/module_14000.c
@@ -43,6 +43,37 @@ u32         module_salt_type      (MAYBE_UNUSED const hashconfig_t *hashconfig,
 const char *module_st_hash        (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_HASH;         }
 const char *module_st_pass        (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_PASS;         }
 
+char *module_jit_build_options (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hashes_t *hashes, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  char *jit_build_options = NULL;
+
+  // Extra treatment for Apple systems
+  if (device_param->opencl_platform_vendor_id == VENDOR_ID_APPLE)
+  {
+    return jit_build_options;
+  }
+
+  // Intel CPU
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  // AMD-GPU-PRO
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  // ROCM
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == true))
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  return jit_build_options;
+}
+
 u32 module_kernel_threads_max (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u32 kernel_threads_max = 64; // performance only optimization
@@ -241,7 +272,7 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_hook23                   = MODULE_DEFAULT;
   module_ctx->module_hook_salt_size           = MODULE_DEFAULT;
   module_ctx->module_hook_size                = MODULE_DEFAULT;
-  module_ctx->module_jit_build_options        = MODULE_DEFAULT;
+  module_ctx->module_jit_build_options        = module_jit_build_options;
   module_ctx->module_jit_cache_disable        = MODULE_DEFAULT;
   module_ctx->module_kernel_accel_max         = MODULE_DEFAULT;
   module_ctx->module_kernel_accel_min         = MODULE_DEFAULT;
diff --git a/src/modules/module_18800.c b/src/modules/module_18800.c
index 9394bd875..81533c4d4 100644
--- a/src/modules/module_18800.c
+++ b/src/modules/module_18800.c
@@ -58,6 +58,37 @@ typedef struct bsp
 
 } bsp_t;
 
+char *module_jit_build_options (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hashes_t *hashes, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  char *jit_build_options = NULL;
+
+  // Extra treatment for Apple systems
+  if (device_param->opencl_platform_vendor_id == VENDOR_ID_APPLE)
+  {
+    return jit_build_options;
+  }
+
+  // Intel CPU
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  // NVIDIA GPU
+  if (device_param->opencl_device_vendor_id == VENDOR_ID_NV)
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  // ROCM
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == true))
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  return jit_build_options;
+}
+
 u64 module_tmp_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u64 tmp_size = (const u64) sizeof (bsp_tmp_t);
@@ -226,7 +257,7 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_hook23                   = MODULE_DEFAULT;
   module_ctx->module_hook_salt_size           = MODULE_DEFAULT;
   module_ctx->module_hook_size                = MODULE_DEFAULT;
-  module_ctx->module_jit_build_options        = MODULE_DEFAULT;
+  module_ctx->module_jit_build_options        = module_jit_build_options;
   module_ctx->module_jit_cache_disable        = MODULE_DEFAULT;
   module_ctx->module_kernel_accel_max         = MODULE_DEFAULT;
   module_ctx->module_kernel_accel_min         = MODULE_DEFAULT;
diff --git a/src/modules/module_20600.c b/src/modules/module_20600.c
index 0a9bc07b9..8189cb6fb 100644
--- a/src/modules/module_20600.c
+++ b/src/modules/module_20600.c
@@ -49,6 +49,38 @@ typedef struct omt_sha256_tmp
 
 } omt_sha256_tmp_t;
 
+char *module_jit_build_options (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hashes_t *hashes, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  char *jit_build_options = NULL;
+
+  // Extra treatment for Apple systems
+  if (device_param->opencl_platform_vendor_id == VENDOR_ID_APPLE)
+  {
+    return jit_build_options;
+  }
+
+  // Intel CPU
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  // NVIDIA GPU
+  if (device_param->opencl_device_vendor_id == VENDOR_ID_NV)
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  // ROCM
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == true))
+  {
+    hc_asprintf (&jit_build_options, "-D _unroll");
+  }
+
+  return jit_build_options;
+}
+
+
 u64 module_tmp_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u64 tmp_size = (const u64) sizeof (omt_sha256_tmp_t);
@@ -184,7 +216,7 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_hook23                   = MODULE_DEFAULT;
   module_ctx->module_hook_salt_size           = MODULE_DEFAULT;
   module_ctx->module_hook_size                = MODULE_DEFAULT;
-  module_ctx->module_jit_build_options        = MODULE_DEFAULT;
+  module_ctx->module_jit_build_options        = module_jit_build_options;
   module_ctx->module_jit_cache_disable        = MODULE_DEFAULT;
   module_ctx->module_kernel_accel_max         = MODULE_DEFAULT;
   module_ctx->module_kernel_accel_min         = MODULE_DEFAULT;