diff --git a/GPU/GPUTracking/Base/opencl/CMakeLists.txt b/GPU/GPUTracking/Base/opencl/CMakeLists.txt
index 3da5b77f80d86..48f292a198b9c 100644
--- a/GPU/GPUTracking/Base/opencl/CMakeLists.txt
+++ b/GPU/GPUTracking/Base/opencl/CMakeLists.txt
@@ -27,7 +27,7 @@ set(OCL_FLAGS -Dcl_clang_storage_class_specifiers -cl-std=CLC++2021)
 if(NOT GPUCA_DETERMINISTIC_MODE GREATER_EQUAL ${GPUCA_DETERMINISTIC_MODE_MAP_NO_FAST_MATH})
   set(OCL_FLAGS ${OCL_FLAGS} -cl-denorms-are-zero -cl-mad-enable -cl-no-signed-zeros -cl-fast-relaxed-math)
 else()
-  set(OCL_FLAGS ${OCL_FLAGS} -cl-fp32-correctly-rounded-divide-sqrt)
+  set(OCL_FLAGS ${OCL_FLAGS} ${GPUCA_OCL_NO_FAST_MATH_FLAGS})
 endif()
 set(OCL_DEFINECL "-D$<JOIN:$<TARGET_PROPERTY:O2::GPUTracking,COMPILE_DEFINITIONS>,$<SEMICOLON>-D>"
             "-I$<JOIN:$<FILTER:$<TARGET_PROPERTY:O2::GPUTracking,INCLUDE_DIRECTORIES>,EXCLUDE,^/usr/include/?>,$<SEMICOLON>-I>"
diff --git a/GPU/GPUTracking/CMakeLists.txt b/GPU/GPUTracking/CMakeLists.txt
index ba2b9d05a3192..74b894d26b806 100644
--- a/GPU/GPUTracking/CMakeLists.txt
+++ b/GPU/GPUTracking/CMakeLists.txt
@@ -17,10 +17,10 @@ set(MODULE GPUTracking)
 if(GPUCA_DETERMINISTIC_MODE GREATER_EQUAL ${GPUCA_DETERMINISTIC_MODE_MAP_NO_FAST_MATH})
   set(CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE_UPPER} "${CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE_UPPER}} ${GPUCA_CXX_NO_FAST_MATH_FLAGS}")
   if(GPUCA_DETERMINISTIC_MODE GREATER_EQUAL ${GPUCA_DETERMINISTIC_MODE_MAP_OPTO2})
-    set(CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE_UPPER} "${CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE_UPPER}} -O2")
+    set(CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE_UPPER} "${CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE_UPPER}} -O2 ${GPUCA_CLANG_FTZ}")
   endif()
 elseif(NOT CMAKE_BUILD_TYPE_UPPER STREQUAL "DEBUG")
-  set(CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE_UPPER} "${CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE_UPPER}} -O3 -ffast-math")
+  set(CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE_UPPER} "${CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE_UPPER}} -O3 -ffast-math ${GPUCA_CLANG_FTZ}")
 endif()
 
 include(cmake/helpers.cmake)
diff --git a/GPU/GPUTracking/Definitions/GPUDefGPUParameters.h b/GPU/GPUTracking/Definitions/GPUDefGPUParameters.h
index 5b5a89cc8bc39..910907368e891 100644
--- a/GPU/GPUTracking/Definitions/GPUDefGPUParameters.h
+++ b/GPU/GPUTracking/Definitions/GPUDefGPUParameters.h
@@ -603,11 +603,11 @@
 // #define GPUCA_KERNEL_DEBUGGER_OUTPUT
 
 // Some assertions to make sure out parameters are not invalid
-  static_assert(GPUCA_MAXN >= GPUCA_NEIGHBOURS_FINDER_MAX_NNEIGHUP, "Invalid GPUCA_NEIGHBOURS_FINDER_MAX_NNEIGHUP");
-  static_assert(GPUCA_ROW_COUNT >= GPUCA_TRACKLET_SELECTOR_HITS_REG_SIZE, "Invalid GPUCA_TRACKLET_SELECTOR_HITS_REG_SIZE");
-  #ifdef GPUCA_GPUCODE
-    static_assert(GPUCA_M_FIRST(GPUCA_LB_GPUTPCCompressionKernels_step1unattached) * 2 <= GPUCA_TPC_COMP_CHUNK_SIZE, "Invalid GPUCA_TPC_COMP_CHUNK_SIZE");
-  #endif
+static_assert(GPUCA_MAXN >= GPUCA_NEIGHBOURS_FINDER_MAX_NNEIGHUP, "Invalid GPUCA_NEIGHBOURS_FINDER_MAX_NNEIGHUP");
+static_assert(GPUCA_ROW_COUNT >= GPUCA_TRACKLET_SELECTOR_HITS_REG_SIZE, "Invalid GPUCA_TRACKLET_SELECTOR_HITS_REG_SIZE");
+#ifdef GPUCA_GPUCODE
+  static_assert(GPUCA_M_FIRST(GPUCA_LB_GPUTPCCompressionKernels_step1unattached) * 2 <= GPUCA_TPC_COMP_CHUNK_SIZE, "Invalid GPUCA_TPC_COMP_CHUNK_SIZE");
+#endif
 
 // Derived parameters
 #ifdef GPUCA_USE_TEXTURES
@@ -621,5 +621,5 @@
 #define GPUCA_NEW_ALIGNMENT (std::align_val_t{GPUCA_BUFFER_ALIGNMENT})
 #define GPUCA_OPERATOR_NEW_ALIGNMENT ,GPUCA_NEW_ALIGNMENT
 
-    // clang-format on
+// clang-format on
 #endif
diff --git a/dependencies/FindO2GPU.cmake b/dependencies/FindO2GPU.cmake
index 650a269209d9b..56b53e1be8879 100644
--- a/dependencies/FindO2GPU.cmake
+++ b/dependencies/FindO2GPU.cmake
@@ -84,8 +84,14 @@ elseif(NOT GPUCA_DETERMINISTIC_MODE MATCHES "^[0-9]+$")
   set(GPUCA_DETERMINISTIC_MODE ${GPUCA_DETERMINISTIC_MODE_MAP_${GPUCA_DETERMINISTIC_MODE}})
   message(STATUS "Set to ${GPUCA_DETERMINISTIC_MODE}")
 endif()
-set(GPUCA_CXX_NO_FAST_MATH_FLAGS "-fno-fast-math -ffp-contract=off")
-set(GPUCA_CUDA_NO_FAST_MATH_FLAGS "--ftz=false --prec-div=true --prec-sqrt=true --fmad false")
+if (CMAKE_SYSTEM_NAME MATCHES Darwin OR NOT CMAKE_SYSTEM_PROCESSOR MATCHES "(x86)|(X86)|(amd64)|(AMD64)")
+  set(GPUCA_CLANG_FTZ "")
+else()
+  set(GPUCA_CLANG_FTZ "-mdaz-ftz")
+endif()
+set(GPUCA_CXX_NO_FAST_MATH_FLAGS "-fno-fast-math -ffp-contract=off ${GPUCA_CLANG_FTZ}")
+set(GPUCA_CUDA_NO_FAST_MATH_FLAGS "--ftz=true --prec-div=true --prec-sqrt=true --fmad false")
+set(GPUCA_OCL_NO_FAST_MATH_FLAGS -cl-fp32-correctly-rounded-divide-sqrt -cl-denorms-are-zero)
 if(GPUCA_DETERMINISTIC_MODE GREATER_EQUAL ${GPUCA_DETERMINISTIC_MODE_MAP_WHOLEO2})
   add_definitions(-DGPUCA_DETERMINISTIC_MODE)
   set(CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE_UPPER} "${CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE_UPPER}} ${GPUCA_CXX_NO_FAST_MATH_FLAGS}")
@@ -172,7 +178,7 @@ if(ENABLE_CUDA)
   endif()
 endif()
 
-# ---------------------------------- HIP ----------------------------------
+# ---------------------------------- OpenCL ----------------------------------
 if(ENABLE_OPENCL)
   find_package(OpenCL)
   if(ENABLE_OPENCL AND NOT ENABLE_OPENCL STREQUAL "AUTO")