I'm still astonished how poorly optimized the YouTube app is/has always been on Apple TV. It's fucking wild how slow they can make it move about a bunch of rectangular icons, the same unit that can run honest to goodness videogames (if simple ones).
Though I suppose my XBox Series X can run Halo Infinite at 4K/60hz (with a ton of asterisks) and still chokes on the main menu which is also coincidentally a bunch of rectangles.
Maybe rectangles are just really hard to draw.
I don't think I've ever noticed any problems with the YouTube app on our Apple TV?
Huh, that's strange, the YouTube TV app is for us one of the more performant ones, although the UX leaves a lot to be desired. But at least when you move right/down/left/up it does so within 50-100ms, whereas with Amazon's app it sometimes take almost a whole second for the focus on actually move around.