Xfinity Stream App Issues

When casting from the app (LG won't allow your resident app without agreeing to their third party datamining partner Alfonso, so I'm using the Chromecast protocol from the Android app), it stutters, has poor resolution, and uses a substandard audio codec. It's like watching TV in 2005. My other streaming apps have 4K HDR with Dolby Atmos. This shouldn't be the case in 2026.

Also, the commercials repeat, play the preceding 20 seconds of the show, and then loops. I have to watch them on my tablet or it won't continue the VOD show (The Ark season 3 episode 1).  I then have to recast after the commercials end to continue the show on my TV.  This is on an LG C5 OLED.

I've tried this from two different devices.