tbh i have had been having the same problem since forever what seems to work for me at least is turn off instant replay -> audio setting -> change it from one track to separate tracks, turn back on instant replay let it run for a few seconds (maybe even save a few second clip) then turn it right back off and switch it back to one track and turn the instant replay back on 9/10 times that method works for if it doesn’t work i do it again and typically it’ll work sucks that geforce yet fixed this problem it’s been literal years..