Something happens with CE 18.104.22.168
I have multiple S912 devices and one S905X3. Since nightly version 20200718, including stable versions CE 9.2.4 and CE 22.214.171.124 I have had problems. The system becomes terribly slow to such an extent that CoreELEC cannot be used on a single very old S912 Acemax M12N device (year 2016 - 2/16GB - 100 Mbps - dtb: gxm_q201_2g.dtb).
Taking into consideration that after a reset the system worked fine but it became slow just at the moment the screensaver was automatically activated, I have stopped using it.
After stopping using the screensaver (screensaver used: Dim) everything seems to work fine in the last 24h..