Check in-game settings and turn vertical sync off (v-sync) and check your graphics card control panel to make sure that it is also turned off.
1. Go to your UGG install folder (it's C:\Program Files (x86)\universegamers\gunzv10.1\ by default)
2. Right click the UGGunz.exe and UGGLauncher.exe application file and choose Properties
3. Select the Compatibility tab
4. Check the Disable Fullscreen Optimizations option
1. Go to your UGG install folder (it's C:\Program Files (x86)\universegamers\gunzv10.1\ by default)
2. Right click the UGGunz.exe and UGGLauncher.exe application file and choose Properties
3. Select the Compatibility tab
4. Check the Disable Fullscreen Optimizations option