Resolume Forum

V6 is seeing a 4K (3840x2160) projector as a 1280x720 screen. It sees my two monitors correctly and also sees the projector (which is set up as Display 3) as 3840x2160, but in the Advanced Output when Screen 1 has the "Display3" selected, but it shows up as 1280x720. Any ideas?

see below:

you probably have display scaling switched on.
could you check with it disabled?

Got it! that was it!

It's an option in windows's display preferences.