In the last week or so I have had to remove and re-add the YTTV app multiple times due to degraded picture quality.
I’ve tested internet speed yada yada yada but this is the only thing that works.
what’s going on?
I have found that from time to time, a YT video is streaming at a lower rate than what my system can deliver. Check the streaming rate to see if the YT video you're watching is at a high rate, and not at 240 for example.
Other apps Netflix Prime Apple all have clear pictures at the time YTTV does not, so I believe this is a Roku issue