You can play Netflix in HD on a computer? I’m watching animated gif video quality on safari, and how do I change it?
Of course, you also need to be on the 'premium' plan, have a fast-enough internet connection, be watching 4K content, have the T2 security chip, have an HDCP display, and so on.
[1] https://help.netflix.com/en/node/55764 https://help.netflix.com/en/node/23742
Interestingly, if any montior you connect is not HDCP 2.2 you don't get 4K.
GeForce Stuff like Nvidia instant replay gets disabled if you have Netflix up in a tab - so close those before you game.