So I found the problem, but not solved ...
The problem is some conflict or interference with the AVR:
the GPU (AMDRX580) has 2 HDMI outputs, in one I connected directly to the projector, in the other to the AVR for the audio.
The only way to let both of them work (Audio and Video) is to select Clone screens, in screen management.
With both HDMI outputs connected though, when Madvr switches to exclusive screen mode, the video goes in slow motion and jerky, stutter
Selecting ctrl + j key OSD in Madvr, when it switches to Exclusive change frequency mode, selecting the wrong one (Movie in 23Hz in exclusive mode hooks the 29Hz);
this only happens in exclusive mode, in window mode no problem
Madvr is configured correctly, in fact if I use only one HDMI output: HTPC ---> AVR (split) ----> Projector,
everything goes perfectly in exclusive mode.
What can I do?
I would like to be able to use both HDMI outputs, without going through the video in the AVR
Sorry for my bad English
Epson LS10500 - AMD RX580 - LightSpace CMS