I have Camtasia 7. Is there any way I can stop it from lagging on video playback? I have vidx as the codec, since DivX didn't work for me either. I've set the FPS to 120, 60, 50, but it never seems to change the performance of the playback video. I have windows 7 basic theme, with aero unchecked. I'm recording in windowed mode. I'm trying to record a game, which runs at 40-60 frames, even while recording. I spent quite a bit of time last night looking at videos trying to fix the problem myself, but to no avail. Thanks for your help!