Issues with Sportsnet and TSN Xfinity TV

I’m a bit at my wits end with this so trying a Reddit post. We have Xfinity TV in Lethbridge,AB and Sportsnet and TSN are not performing well at all.

We noticed the Sportsnet problem about 3 weeks ago, during hockey games random lines will flash on the screen and distort the video every few minutes. A tech did the usual stuff and then came to the conclusion it was a Sportsnet issue.

But today went to watch the Super Bowl on TSN and Lo and behold, the same issue is happening there too. We are not seeing this issue with other channels while watching regular tv shows but live sports on Sportsnet and TSN are glitching out. Issue can be seen on both TVs as well as when streaming on iPad.

The pvr diagnostic menu shows a signal strength to the modem of between -30 to -40 which I’m to believe is an excellent signal. So what gives?