Apparently There is beef between apple and google, and google won’t allow you to watch content in 4K on their video players (say youtube) for newer chip like the M1. There is no sound explanation apart from being a petty org. So to be able to watch stuff in the resolution you like you need to enable dev mode and add “experimental features” and some arent even on after that. Ask me why apple doesn’t battle it? I didn’t care enough to find out at that point, they’re both assholes fighting but the users pay. I simply switched to firefox on macbook pro and i can actually use a retina to its full potential. Can enable 4K there on video players with no hassle.