Random GPU usage drops to 0% every 2-10min causing fps freezes

NoobyNoobyDo

Commendable
Aug 11, 2016
13
0
1,510
First of all my system:

Intel i7 4770 3.4 (oc to 3.7)
16gb ram (corsair vengeance + kingston hyper fury 1600mhz)
Asus GTX 650ti (1Gb)
System on SSD
450w PSU

Now the problem:

I run into periodical random GPU and FB usage drops to 0% during gaming (specifically Dayz SA).

First I decided that it was something with the CPU, so I OC it a little plus added 8 gb of ram (had to buy a kingston unit, since I was unable to find a corsair, same frequency, checked in forums before buying), the problem disappeared.

Then I decided to OC my GPU to get more FPS in the game, I didnt went far (from 928 to 1028 core and from 5400 to 5500 memory), tested with heaven at extreme for stability, everything went smooth.

Started playing again, and the GPU usage drops came back. With shorter negative effects (before the changes I had like 3-10 secs freezes with fps dropping to 0-2, now only 1-2 sec).

Is there any way to find the source of this problem? I could go back with the OC, but I'd like to try to get this running fine :)

Thanks in advance guys!