Red bar at top
Recently I upgraded my 2019 MacBook Pro to Senoma and a few times while I was outputting a video in Adobe Premiere I have notice it really slows down and there is a Red Bar across the tip of the desktop where the Menu Bar is? It seems to go away after the whirling (you can really tell my computer is working hard) What is this and how can I get rid of it? Thanks!
MacBook Pro 15″, macOS 10.14