You want your stream to be as smooth as your best dance moves, not laggy and jittery! First off, running a live stream AND watching it at the same time is like asking your computer to juggle while riding a unicycle.
Let’s talk about why it seems like its trying to play an electric guitar with a spoon it’ll work, but not very well. You might think, “Hey, I’ll just pull up my own Twitch stream on another browser, mute it, and I’m golden!” (THIS TOO IS A WAY TO GET THINGS DONE) Need a break from the spotlight? Just go to the “Docks” menu in OBS and uncheck your custom dock. Now you’ve got a sleek, movable Twitch chat window right within OBS.