--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -847,7 +847,7 @@
 		endif()
 	endif()
 
-	set(CMAKE_CXX_FLAGS_RELEASE "-DNDEBUG ${RELEASE_WARNING_FLAGS} ${OTHER_FLAGS} -pipe -funroll-loops -O3 -fomit-frame-pointer")
+	set(CMAKE_CXX_FLAGS_RELEASE "-DNDEBUG ${RELEASE_WARNING_FLAGS} ${OTHER_FLAGS}")
 	if(CMAKE_SYSTEM_NAME STREQUAL "Linux"
 			AND CMAKE_CXX_COMPILER_ID STREQUAL "Clang"
 			AND CMAKE_CXX_COMPILER_VERSION MATCHES "^9\\.")