Apple tv 4k network issue

I fixed the issue by buying an Apple AirPort Extreme and plugging my cat6 cable from Ethernet lan to Apple AirPort Extreme wan port. Then connect the rest of my devices in with lan ports on AirPort Extreme. I then disabled the WiFi on my att router to ensure there is no WiFi confusion. ***** to have to spend more $$ but not everything runs at GB speed. 4K Apple TV and my PS4 pro. To disable the WiFi I took these steps. Yours may be a little different depending on your internet company.

To disable the wireless:

1. With a computer connected directly to the AT&T Router go to http://192.168.1.254
2. Select Settings at the top
3. Select the sub-tab LAN
4. Select the sub-tab Wireless (it may ask for a password, this will be labeled as the system password or device access code on the side of the AT&T router).
5. On Wireless Interface, click the drop down and select Disabled.
6. Save

To let your Airport handle the routing:

1. With a computer connected directly to the AT&T Router go to http://192.168.1.254
2. Select Settings at the top
3. Select the sub-tab Firewall
4. Select the sub-tabl Applications, Pinholes and DMZ
5. Where it says Select a computer, choose your Airport Extreme
6. Scroll down to the bottom and choose Allow all applications (DMZplus mode)
7. Save

Hope this helps.

Hi. Check your router logs for any unusual behavior from Apple TV when on ethernet. Apple TV on ethernet has a long-standing issue with DHCP, where it may renew its lease several times an hour, instead of every few days, as it should. If this is happening, I recommend switching to WiFi.

I have gigabit internet but over WiFi I only get about 50mb. Perfectly fine to stream but with a reliable Ethernet connection I would never see a loading screen. ***** to have a gigabit Ethernet port that can’t go to good use. Is there any settings I might be able to change for the Ethernet to work?

I received my 4K tv yesterday and I am having the same issue. When I hardwire the Apple TV 4K to my router after some time connected it causes the router to lose internet connection for the other devices connected. If I connect the Apple TV over WiFi I don’t have this issue. I would prefer to direct connect so I can utilize the 1gb internet speed I have. Any ideas of how to fix this.

Thanks for the work around. But, this isn't an actual solution to the problem of wanting to use a hard line to the Apple TV. If I put the Apple TV on Wifi, it buffers and the quality drops. I am hopeful that Apple will fix this issue, because what's the point of offering a 4K product that can't actually receive the 4K signal because of a design issue.

HAHA, so the issues is fixed! After some more research, it seems that Apple patched the issue with tvOS 11.1. I have the APT4K connected directly to my AT&T Gateway with a Cat 5e cable. No issues anymore since the update.