EDIT 1:
done the test (plugged monitor to motherboard), now i got gpu 0 at barely 10% while gpu 1 going normally and nVidia Control Panel won’t open: “nVidia monitor settings are not available - Currently no monitor plugged to a nVidia gpu is being used”.
Does this mean that i’m forced to have a monitor plugged to a non-dedicated gpu to have sli being correctly working even if i’m on vr (so i’m not going to use my monitor to play)?