My 2021 iMac running mac os monterey 12.2.1 won't allow me to change renderers on premiere pro. I've finished my project and it's stuck on the metal rendering option but I need to change it. There are also other bugs like the fact effects can't be placed over the top of clips as an error message 'this effect requires GPU acceleration' come over the screen and finally some of my clips footage will only be added to the timeline bar as audio despite the footage showing up in the preview box (not sure of technical terms for all parts). Please help.