I'm experiencing this issue from the first day after a fresh install of LibreELEC 9.2.5 (Kodi 18.8 Leia) on my Rapsberry Pi4B.
Randomly (but several times per video) image and sound freeze and (after a few seconds... 5 or 6) continue further forward (not where it froze). If I go backwards and force to display the lost time I can watch it so I think that is not a problem of the video file corruption. Freeze times are random (not at the same time with the same video).
Looking at the log files, freeze times matches with a bunch (more than 300 per freeze) of warning messages:
Looking for info I've read a guy that solve this issue creating an advancesettings.xml file giving more memory to the video cache but I don't know if I'm pointing to the right direction and this is not working for me.
Please, any idea? It is very frustrating due I've never had these issues with my old Raspberry Pi 2B that played exactly the same videos with the same USB stick smoothly... And now I'm using the RapberryPi 4B with 4Gb and it is worse
I really appreciate any help you can provide.