I posted this last night in the feedback forum but that section seems pretty dead, so sorry for the repost!
Many suggestions I've seen have been to disable any overlays--the only that would apply to me since I don't have mumble or teamspeak is steam, and I've disabled that. All my drivers, windows, c++ redistributables, etc are all up to date. Another frequent suggestion I've seen is to disable any audio controllers from MSI and I don't see anything like that in my task manager. I've even reinstalled the game several times and had steam check the files to no avail.