I have some 4K movies on my 2017 5k SSD iMac that I would like to stream to my Apple TV 4K through Home Sharing or Plex. I have 100mbit down and 10mbit up. The Apple TV has wired internet, and the iMac has wifi. I have previously been using this setup for 1080p and it works perfect. But what about 4K? Does the iMac use the 10mbit up to send the data to the Apple TV? Or how does that work? I’m just wondering I need to get higher internet speeds or not. Does HDR work through Home Sharing btw?