that's odd, the settings still work for me in r2672, have you tried running as an administrator?
check taskmanager make sure no other instance of jpcsp/java is running while setting the options, maybe the options are being overridden (if you previously saved a game profile).
check taskmanager make sure no other instance of jpcsp/java is running while setting the options, maybe the options are being overridden (if you previously saved a game profile).
Try Out JPCSP Launcher v1.8.0.4 | How to post a log