Hi, I have an Optoma HD66 projector and a Nvidia 550M gpu that used to work for playing 3D games and movies. When it worked, it would sync to my projector at 720p and 120 Hz. It still works on my laptop monitor. For some reason, the settings changed and it only syncs at 60 Hz. I've tried reinstalling the drivers but I can't seem to get the setting back to 120 Hz. When I turn on the 3D, the 3d transmitter turns on but the glasses do not shutter (they are fully charged). When I try to set the refresh rate in the Nvidia control panel, the only options which it gives me is 50 Hz and 59 Hz. Please help! Ubas
