Version 4.16.0.Internet speeds for 1080p and 720p

iPad Pro 2020(12.9 inch)iPad Air2(9.7inch)

I can do everything i need with my internet speeds(including streaming cycling on Eurosport in 1080p)However I am getting buffering of the video using 1080p in TTA.I do get this buffering occasionally using 720p but mostly there are zero issues using 720p and the picture is still good on the small screen.