When I start playing, sounds are fine. After a while, everything from 30 minutes to some hours of play, I start losing sounds. ie. moving a unit doesn't make the sound anymore, leaders don't speak anymore etc. Exiting to main menu and reloading the game fixes the problem, but I have to do this every so often and it gets annoying. The problem started occuring a couple of weeks ago. All mods are off as of R&F and the problem still persists.