Interface 3762 crashes a lot on my system. It runs for a short while then crashes. The log files show nothing out of the ordinary. Win10pro, gt460M. I noticed sound was cutting in and out too. Verified I have a 31ms ping to S.F. 10Mb/sec symmetric.
A clue: I did notice something interesting that the crashes were happening during the time of heavy downloads. I cleared the interface caches and suffered unstable interface operation until the downloads completed. Thereafter, no crashes happened until something new appeared in the scene. Maybe during asset downloads the models are not complete but are being accessed by the render code.