Netflix error code 11800 on Apple TV

Hi all,

I recently bought a new AppleTV 4K and was enjoying it trouble-free. Then about a month ago I started to get the 11800 error on the Netflix app accompanied by the message "A problem occurred while playing this item. Try again later, or select a different item. Go to www.netflix.com/support for more information." This error occurs randomly -- sometimes I can play an entire hour long episode of a show without the error appearing and sometimes it appears every 5 minutes. I have tried rebooting my Apple TV, factory resetting my Apple TV, rebooting my modem and router -- nothing works. I also called Apple Support, but no luck there. I even tried a different Apple TV but that didn't solve the issue either. All the other apps work fine, no glitches.

Any ideas on how to fix this?

Many thanks!