Hey there!
Since the new update (23/03/2015 Action! 1.24.2) I've got many synchro issues with Action!
I got this problem by recording Minecraft (just tested with this game by now), with AVI recordings.
OS: Windows 8.1
Video Card: Geforce GTX 560 TI
Memory: 16 GB
Monitor Resolution: 1920 x 1080
Recording Mode: Game (Minecraft)
Video Type: AVI
Someone else with this problem?
Like I said, it just occures since the new patch..
Tschainaik