Constant game crashes

Since harvest came out, and maybe a bit before that, I've been getting random game crashes more or less constantly. the game just freezes then shuts down every now and then. Sometimes several times in one hour and sometimes not for several hours.


Graphics card:Nvidia Geforce GTX770
Processor: Intel i5-6600K 3.5GHz
7,9Gb ram

Things I've tried:
Vulcan/Directx
Switching lootfilters/playing without lootfilter
Culling on/off
playing with just one monitor (instead of two)
using the game repair
Reinstalling the game
rebooting the computer

As a sidenote, whenever a crash occurs, if I have youtube up on a second monitor, the video freezes but sound continues. and if I have PoB active, it shuts down together with PoE.

Do you have any suggestions as to what I should do? I've come to a point where I just can't deal with it anymore, so many Lab runs lost, important portals lost etc.

Best Regards
Xenoglossy