This is the best answer I have found to this issue. I read a suggestion before I saw this to open some ports but I still had the problem. The 5 more port numbers this posts fixed my issue along with assigning 2.4ghz and setting channel to use instead of auto. Streaming from iOS perfectly! Made a call while streaming and music paused and came back by itself I have also been able to skip songs and it continue through that song. No dropping at all. Good find!
- Manually open the following ports in the router (port forwarding): 3689,5353,1900,5351,5350,7000,5000,123,53
(I used both UDP and TCP “just in case”). For detailed info: https://support.apple.com/hr-hr/HT201733.
- Manually assign one fixed wifi radio channel : prevent the router from automatically
switch channel.
- Force ATV to connect in 2.4Ghz band.
- Restart iOS device and router