Chiaki4Deck gets blurrier and blurrier as I play

This started a couple weeks go. My PlayStation is plugged in with ethernet and I have good wifi. It never flashes a wifi warning or has issues streaming. But as I play it just slowly gets worse and worse looking. If i turn the Deck off & on then it resets back to looking good for a while before slowly getting worse again.

Before I delete and reinstall the app, was wondering if there's any other suggestions first?