I came from a raspberry pi 3 with plex media player.
I bought a M8S II and installed libreelec.
I have set that the monitor will adjust the refresh rate to the video, but when i start the film nothing changes. Its always 1080p 60hz.
Manually i can only set it to 1080p 50/60 hz
I already tried the disp_cap_hack but that also doesn't work. It tries to switch when i start a video but when its done its still 1080p 60hz
My setup: M8S II > Yamaha HTR-3068 > Optoma HD142x