diff --git a/cemutil.sh b/cemutil.sh
index c9cf54e..fa0ce57 100755
--- a/cemutil.sh
+++ b/cemutil.sh
@@ -126,7 +126,7 @@ if [ -z `winetricks list-installed|grep vcrun2015` ]; then
   winetricks settings win7
 fi
 cd $(realpath $instdir)
-mesa_glthread=true vblank_mode=0 WINEESYNC=0 wine $(realpath $instdir)/Cemu.exe "\$@"
+mesa_glthread=true export __GL_THREADED_OPTIMIZATIONS=1 vblank_mode=0 WINEESYNC=0 wine $(realpath $instdir)/Cemu.exe "\$@"
 EOF1
 chmod +x LaunchCEMU