I don't know if this will help anyone, but I was unable to connect to Rogers Ignite on my Windows 11 Desktop until I completely shut off NordVPN - even though I wasn't connected to the VPN. As soon as I shut it off completely Xfinity connected immed...
I have been experiencing the exact same issue this week. Samsung tablet is jittery and audio is out of sync when playing live TV, but when playing a saved recording it works perfectly. Both live and recorded stuff plays perfectly fine on my Samsun...