I've just recently upgraded my NUC from 9.1.501 to 9.2.0 and it appears that anytime video playback is attempted the interface freezes for an extended period of time and then displays a message suggesting the file is no longer available. During the long freeze the debug information in the top left of the screen also freezes.
I can still login via ssh and issue commands, and I can force a restart via commandline, however this issue is persistent even after restarts, reboots etc.
I attempted to try 9.1.502 also and the issue is present in that version too, I've had to rollback to 9.1.501 for this to work successfully.
Given that I have other devices in my household too I figured I'll give it a go on other devices, RPi2 seems to exhibit the same issue.
All of the devices are using a mysql backend for the database.
Upon further investigation it looks like I cannot browse any of my sources which are all NFS shares with the following notation: nfs://HOSTNAME/SHARE/
This seems to cause the long freeze and there's an issue I was able to find on the Kodi forums: Can't add NFS shares.
What isn't clear to me if this is if this is a libnfs or rpcbind problem and secondly if it's the client or the server, by following the other threads and github issues and based on what I'm experiencing I think it's a client problem, mainly because I can roll back LibreELEC to 9.1.501 and successfully play items from my NFS shares.
I've attached the kodi debug logs for both devices, happy to provide any additional details if it will help too.