I am having the same problems as the above subscribers with Spectrum stream on AppleTV. I recently switched to Spectrum's streaming service after using Hulu with Live TV. Prior to that I used SlingTV. I had no problems with resolution, freezing, sync etc using those apps with my Spectrum WiFi. The problem must be with the Spectrum app as Netflix, Hulu, Amazon, SkyNews, all stream perfectly on said wifi with no lag or poor resolution. It is especially bad on local channels as others have said. I know the app is new(er), but perhaps an update is needed.