I have the same problem … run Zwift on AppleTv → connected to older plasma TV. The screen is cropped as I haven’t found any solution on how to fix it.
- I tried all possible resolutions in Apple TV (az Vincent advised) - no fix
- I can’t change screen size (zoom) on my TV, as it simply doesn’t provide such function … I can only shift horizontal/vertical.
Thus I have to run Zwift cropped - missing edges on both sides (left/right) … an annoying a little bit, but still playable.
This is not Zwift error, but if it provides some “additional screen size setting”, then it will be great