Its always in CS:GO. I Dont know if it on other games. But if i record in like 50min it get unsync. It always at the end of the video. I record in 60fps 720p.

My sound do not sync in my videos if I record in a long time. I dont konw why.

OS: Windows 8.1.
Video Card: Nvidia ASUS 970 GTX.
Current Driver version and date: Lastest.
Memory: 16 GB.
Monitor Resolution: 1280x720 & 1920x1200.
Recording mode: Game/Application.
Video Type: AVI.