--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -756,11 +756,10 @@
 		endif()
 	endif()
 
-	set(CMAKE_CXX_FLAGS_RELEASE "-DNDEBUG ${RELEASE_WARNING_FLAGS} ${OTHER_FLAGS} -pipe -funroll-loops")
+	set(CMAKE_CXX_FLAGS_RELEASE "-DNDEBUG ${RELEASE_WARNING_FLAGS} ${OTHER_FLAGS}")
 	if(CMAKE_SYSTEM_NAME MATCHES "(Darwin|BSD|DragonFly)")
 		set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -Os")
 	else()
-		set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O3 -fomit-frame-pointer")
 		if(CMAKE_SYSTEM_NAME STREQUAL "Linux"
 				AND CMAKE_CXX_COMPILER_ID STREQUAL "Clang"
 				AND CMAKE_CXX_COMPILER_VERSION MATCHES "^9\\.")