Looked more into the code, and tested it a bit more. It seems the absolute movement isn't the best for handling range with mouse. I.e. click and move mouse to get a distane it's traveled. If you move the mosue really slow you'll see it stutters a lot on the off screens. This is because it's passing absolute positioning. But this absolute positioning is what's giving the same relative mouse position. I can try to get them both to work as I believe they both should be possible, but I'm not sure if I'll be able to.