Stream Application crashes and TV appears to reboot

Recently, the Stream application running on my LG 55" OLED tv has started to crash after I've been watching any show, for about 20 or 30 minutes. Each time, the picture goes black, and then the TV seems to restart or at least I have to reselect the Xfinity application. I have since deleted and re-installed the application, but it still behaves the same way.

All of my other streaming applications work fine - Apple TV, Paramount+, Prime. No issues at all. Only the Xfinity Stream application has this problem.

I have the application installed on my other LG OLED tv, and I do not see this problem at all. It is a larger TV and a few years newer.

Any ideas on what is going on. It does not seem to be a TV issue since the other apps work. Could it be a memory issue?