help broadcasting

All of my stream audio is just cutting off repeatedly, in successions. But it only happens after like an hour or so. I can hear everything just fine through my headphones but when i check my stream all my audio is cutting in and out , any suggestions for help? I've tried looking this up but...

When I try to broadcast my game (all the above plus Minecraft, Overwatch, Hearthstone) to OBS Studio am unable to see the game capture source in OBS and there's only a black screen. I'm unable to transport my feed from my game to the obs software as I don't get visual feedback by doing so. I...