Yeah I noticed, that's how I had it set when I could get very quiet chat and game volume, where the game volume drops out when any chat occurs...
I saw something like this whilst searching of answers, someone suggested something called a DSS2 or something, but I think it was quite expensive...Going to keep trying things, I'll look into one of those converter boxes, if they're cheap enough, then wait of the patch before looking for a new 1, hopefully I can cope till then...