So I use the manual recording part of ShadowPlay, and I have been encountering issues. With driver version 337.50 and GeForce Experience version 2.0.1 (something like that, the newest one) and at first it would work fine, but last night (in all games I have tried) once I toggle the recording on, when I hit the hotkey to stop/save the recording nothing happens. I have tried changing my save directory to a different hard drive, changing the hotkey, and different games. Also when I alt+tab out of whatever game I am in it terminates the recording and deletes the file it was writing.
So today I reverted to the latest WHQL drivers and it worked for about 30 minutes, and then the issue started again. I also tried reinstalling GeForce Experience. No joy. Anybody else have this problem?