I’m having the same issue. It was only rarely, but now it’s managed to happen 3 times within 10 minutes.
nVidia gtx 960, i7 4790k 4ghz, neither overclocked. Both windows and the game are on a normal 1tb hard drive. The motherboard is an MSI z87 gaming board. I’m directly plugged into our router, not sure what model and it’s kind of hard to get back there to look at it. We’re with xFinity and the router is from them.