I had a RPi4 (1Gb Memory, 16Gb SDHC) running just fine on LibreELEC 9.1.002 for a couple of weeks.
However, when I upgraded to 9.2.0, the GUI starts becoming extremely sluggish a couple of hours after booting. When browsing through the Movies or TVShows libraries, it takes a considerable amount of time for the lists to load. Playing a movie/show is never a problem and I don't notice any delays once the media-file is playing. The issue seems to be limited to navigating through the UI. Once I downgraded to 9.1.002, the issue stopped and the UI is as responsive as ever.
I'm running the following add-ons: Auto Library Updater (every 24 hours), Trakt TV (scrobble and update after a library update), Backup (once at midnight).
My library contains about 155 TV shows and 650+ Movies. All files are shared from a Windows 2008R2 Server using SMB but as the problem seems to be more related to navigating through the library, this shouldn't have any impact on the cause.
Any ideas anyone? Seems like I'm stuck on 9.1.002 for the time being.
Peter
