I've also had this issue twice today. Interestingly enough, not at all yesterday or the three times previous. It seems to be an issue mostly during the day/evening for me. If I play at night (11PM PST onward) I don't seem to have the issue. I have nothing else running, no overlays (as I was told that was part of the problem for not being able to move in-game), and not even a web browser. This happened when I was using a single screen, and when I'm on dual screens. Occasionally I freak myself out by accidentally ending up on the other screen (borderless windowed) after dying. I have noticed a distinct POP right before sound cuts out most of the time. On rare occasions (this most recent event) it simply cuts without warning and I'm left playing the rest of the match watching my mini-map like a hawk so I don't get sneaked up on. This is extremely detrimental to my ability to play the game and indeed hurts my overall enjoyment. It's been long enough for a culprit to have been found. Why hasn't there been any progress?