Audio/Visual Out of Sync/Delay

The audio/visual is out of sync on my Xfinity Stream App after watching a channel for about 10-15 minutes.  I will be watching a channel, and everything will be fine, and after a little while all of a sudden it's almost like the buffering has a delay and then tries to catch up, but it catches up out of sync so the sound and video aren't matched.  I have tried resetting my TV multiple times to no avail.  The only fix I have found is to exit the channel with the back button, and reopen it again.  I have never had this issue until about the last week or so.  The latest app version is dated 5/9/23 - so it has probably been longer than a week, but I am just noticing that it's been happening regularly now.  I have an Onn Roku TV, and Xfinity Blast! internet service.  My X3 box downstairs is still working properly, and I have not changed any hardware at home recently.  This is a huge annoyance.  I hope Xfinity releases a fixed version of the app soon.

Edit (November 3, 2023): I am currently experiencing no issues anymore.  I have since upgraded my XFi Gateway to the most current one (the white Cisco model) and also tried 2 brand new routers upstairs in my home, where I was experiencing issues originally.  I am not 100% sure what was causing the issue, but honestly my best guess is since that time, the Xfinity Stream App for Roku TV was updated and the bug was fixed.  I had to deal with the out of sync problem for a few months after I originally posted this, and it was more of an annoyance than anything else.  I was still able to watch TV, but I constantly had to exit the channel and re-enter it to fix it temporarily.  It was for every channel, it didn't matter which channel I chose.  Like I said, I feel like it was a bug in the Xfinity Stream App and not a hardware issue.  And it's been working flawlessly for a while now.  Just wanted to give an update on this, as seeing as other people are having similar issues on different devices.  Mine was specifically on an ONN. brand TV (55") which is a Roku TV.