ESPN freezes up with xfinity stream tv app

ESPN channel and only the ESPN channel, not ESPN 2 or ESPN + will lock up/freeze for both audio and video after a few minutes of streaming.  First the video will start glitching then it will finally freeze up.  This is happening on multiple TVs in the house with different devices.  This affects both 724 and 1205 ESPN channels.  If we switch off to a different channel, then back to ESPN, it will work for a few minutes, then freeze again.

We are using the Roku 4k Plus for streaming with the Xfinity streaming app.

ESPN worked fine for a few years, then just started freezing up about a week ago.  I noticed that commercials do not freeze, only the main ESPN broadcast, both games and regular ESPN shows.

We've also noticed the channel changing has gotten very slow sometimes ( 20-30 seconds ) and will sometimes time out with the Xfinity streaming app.