What is slow about them? I've never had issues with my ultra and frequently stream 4K HDR content. I have not found a good reason to upgrade to Google TV and pr

What is slow about them? I've never had issues with my ultra and frequently stream 4K HDR content. I have not found a good reason to upgrade to Google TV and prefer the cast-only behavior. I do have it connected to Ethernet though. Also, some services' casting implementations are less than ideal though.