--- a/CMakeLists.txt	Tue Dec 13 21:21:55 2022 +0100
+++ b/CMakeLists.txt	Mon Jan 02 15:59:26 2023 +0100
@@ -139,10 +139,10 @@
     add_flag_append(CMAKE_CXX_FLAGS_DEBUG "/Od")    
 else()
     add_flag_append(CMAKE_C_FLAGS "-Wall -pipe")
-    add_flag_append(CMAKE_C_FLAGS_RELEASE "-O2")
+    add_flag_append(CMAKE_C_FLAGS_RELEASE "-O3")
     add_flag_append(CMAKE_C_FLAGS_DEBUG "-Wextra -O0")
     add_flag_append(CMAKE_CXX_FLAGS "-Wall -pipe")
-    add_flag_append(CMAKE_CXX_FLAGS_RELEASE "-O2")
+    add_flag_append(CMAKE_CXX_FLAGS_RELEASE "-O3")
     add_flag_append(CMAKE_CXX_FLAGS_DEBUG "-Wextra -O0")    
 endif()