Anyway, for starters, the opening FMV had a strange audio stuttering problem. It was like one second of audio, then one second of silence that kept going consistently. I told him to get to the gameplay and see if the problem persisted.
As soon as the actual game started, everything was fine. Smooth audio and video both. But after a few moments his framerate went down to 10 fps and stayed locked at that. This was with Vsync on or off.
He verified the game cache and updated to the latest Nvidia drivers but it didn't help. Also, I don't know if this is just an Nvidia thing but his settings menu is different from mine. First of all, there's no "Smart" setting for Vsync. Also, he has an option for "GPU Transcoding" or something like that. I don't have that option.
Does anyone know what he should do? Unfortunately, we're communicating over the phone so I can't look at his PC/game. I can only look up fixes and try and tell him what to do. His GPU is a GT 240 which is right around the minimum I think but I don't think that would grant him 10 fps. Besides, it was fine for a little bit then went down. I don't know about his processor but it's a 6 core AMD. I'll try and get more details if necessary.
Since I know his video card is on the low end, I told him to turn the resolution down just to check. Even when turning down the resolution the frames are locked in at 10 fps.
Thanks for your help and sorry for the long thread!