I have this problem too. A fix is to add shift and or ctrl plus your normal PTT button as an additional PTT button. (eg hotkey 1: V , hotkey 2: v+shift , hotkey 3: v + ctrl) This works but it sounds a little rough sometimes. I can't understand how this isn't a massive problem for gamers! How many gamers are going to be using their PTT button while simultaneously using shift or ctrl? I'd imagine something like 90 percent! This makes no sense. Reality must be a rudimentary simulation.