The Apple TV will display th correct format the tv supports but if your speed is crap, you’ll get that for quality or lots of buffering. There is nothing you can add to the Apple TV to make it “faster” or ports to forward.
1: Make sure your Apple TV is in the range of the router; 2: Check whether Wi-Fi is workable ; 3: Check the router's security settings; Part 2. Top 6 Methods to Solve Apple TV Won't Connect to Wi-Fi . Method 1: Restart Apple TV and the router ; Method 2: Fix Apple TV won't connect to Wi-Fi without data loss; Method 3: Update the router's firmware 5 Best VPNs for Apple TV in 2020 and How To Set Up Correctly Jul 23, 2020 Solved: Nighthawk X4S R7800 - Using Apple TV - NETGEAR
Apple TV port forwarding settings on router. Setup Apple TV port forwarding settings for a Linksys/Cisco router: Click on “Applications and Gaming” tab Select “Port Range Forward” Enter 3689 in Start and End (External -Internal) also try instead UDP port 5353 Protocol should be both IP Address should be AppTV Enable Save Settings and reboot
Jul 11, 2013
in case of your Apple tv won’t accept wifi password or apple tv won’t let me change the wifi password. Try this ideal solution Just Unplug your cable modem and router from the power plug and then plug it back. Restart your ATV 4- Go to Settings – System and Select Restart. For ATV 3 and 2 nd Gen – Go to Settings – General and Restart.
Apple’s Done Making Airport Routers, So Try These Instead Close observers of Apple’s networking products—surely they exist—know that the company hasn’t updated its Airport line of Wi-Fi routers since 2013.That’s so many iPhones ago! This week Configure a router in Home on iPad - Apple Support