I've send my dxdiag to mirillis support but I think the problem lies in 60fps. After I changed it to 30fps Action! saves everything. Now I record in MP4 (AMD APP), 1080p, 30fps, 100% bitrate.

Performance lose could not be the issue because it happened to me in Hearthstone and this game doesn't need much. Same with Diablo 3. Action recorder very good gameplay with 10fps-20fps in game during the recording. I have a solution for my problems with Action!. I've set my frame rate to 30fps and ...

I don't know if this problem was reported or resolved. I press F9 to record and it shows that the program is recording. But the 30min gameplay is a 50s video, same with over an hour of gameplay, it saves first 3 minutes. It happened to me with Diablo 3:Reaper of Souls and Hearthstone. Any ideas?