The game is locking up every 2-3rd second.

Video VOLUME WARNING for headset users:
https://yarr.ntg.cx/pub/dayz/VID_20140208_211244.mp4

This behaviour came after the so called "FPS fix" patch.

• Experimental branch works fine with NO lag or stutters like this. **

Tried so far:
Reinstalling DayZ (including deleting folders in My documents, Appdata)
Installing dayz to a SSD
Newer drivers
Older drivers
Disabling SLI

Specs:
4,5ghz 3770k
16gig ram
GTX 680 x2 {F30369}