I have 2 PCs, both with roughly the same specs (i7 3770 + GTX 970, one 8 GB RAM, the other 16 GB). When I played co-op with my wife, the game was crashing to desktop every 5-30 minutes only on my PC, whereas the other one had no issues whatsoever. I have been experiencing similar crashes in the early access period so I was hoping they would have fixed it by launch. I have tried to determine why one PC crashes and the other doesn't, and came to a conclusion that it must be in OC. Here's what I've done:
- disabled any CPU OC in BIOS. I have a non-K version so my OC was basically turbo enabled on all 4 cores up to 4100 MHz, so I set all the settings back to Auto
- disabled MSI Afterburner along with any GPU OC
- disabled all non-essential software prior to launching the game
The result was that the game crashes once every 5-6 hours of gameplay, sometimes doesn't crash at all during a game session. It's not ideal but completely manageable. It's true that the game has been patched 3 times since launch so it might have helped to some degree too. Anyway, give it a try if you're still struggling with playing and are out of ideas.