My current model Apple TV automatically updated to TVOS 15 a few days ago and now I'm having 4K streaming issues with every movie I have purchased. It's not even streaming at an HD level, more like a blurry standard definition. It's not my internet connection (speedtest over 500mbps) and 4k streaming works perfectly fine with youtube, HBOmax, Vudu, and Amazon Prime apps. I've restarted a few times and am contemplating resetting the device. Has anyone been experiencing this? I would appreciate any help.