I'm currently using the trial version to test it out. The problem I'm having is when I switch from a fullscreen, not bordered or windowed, app on the primary (1) monitor to use an app on the secondary (2) monitor. Moving the cursor over to (2) works fine but when I click anywhere on the screen the on top app and all windows jumps to (1). Then I have to move them back to (2) and set the movie/game/whatever-was-in-fullscreen back to fullscreen. I have the prevent window deactivation setting checked. The hot key works. Is there another setting that needs to be on?

Edit: words

I gave up trying to get this to work with fullscreen. It may just be that the game doesnt like being fooled with. So I set up monitor profiles so I can use fullscreen windowed with whatever resolution i need. But this has introduced another problem. So when I am using the main 4k profile the mouse will move freely between screens as it should. If I switch to another profile, in this case to 1440p, the mouse becomes locked to the primary display and will not move to the secondary display. I will add that I have changed no default settings at anywhere. Only created monitor profiles. I am currently testing a couple other monitor programs and switching monitor profiles does not cause this mouse issue with them.

Ok so disregard all of this. I fixed the cursor problem. The problematic monitor profile had saved the second monitor position to be not aligned correctly with the primary. The cursor can't be moved to where no monitor is, duh. Correct alignment and now its working.