How can I make the cursor in Windows with a multiple monitor setup behave like it's moving between all monitors having the same resolution?

Question

I just added a new 4k monitor to my setup, bringing my total to 3. My problem is that windows "thinks" that the monitors are physically the relative sizes they are in the display settings, when they're really only an inch different (the 4k is 28" and the 2 1080s are 27"). This makes moving between the monitors a bit of a pain, since the mouse stops at the monitor edge when going from display 1 to either of the other 2. The cursor also jumps to the middle of the screen when moving from either 1080 to the 4k. Is there a way to get them to "line up" to the point where the cursor behaves like it's moving between monitors that have the same resolution?

System setup: nVidia GTX 970 Intel Core i7 4790K 16Gb ram Windows 10 Pro 64 bit

Answer 1

Found this solution on a different thread, originally from Steve:

Perhaps LittleBigMouse could help you out? It's an alpha application, but it seems to be focusing on the issue you're having.

Github: https://github.com/mgth/LittleBigMouse

Download (Releases): https://github.com/mgth/LittleBigMouse/releases

I have been using it myself with a 4K UHD monitor and a 1080p Full HD monitor and this does exactly what you want.

Answer 2

Sorry, you can't.

Computers don't know about the physical size of the monitors: only know about the virtual size (that is, the size in pixels).

Answer 3

You have a few options, the most reasonable one would be to enable what Nvidia calls DSR, on AMD side I believe is called super resolution, that will allow you to run your monitors on higher than native resolution, tricking the OS into thinking they are all 4k, depending on your work load you would even benefit from the 'extra' virtual space or it might not. You could also rearrange both of the small monitors one above the other (bring #3 down in line with #2).

What I personally would do is flip those smaller monitors in portrait mode, one in each side, highly recommend you try it.

Answer 4

Your best bet is to turn down the resolution of the 4k. This will fulfill your wish for it to behave like a 1080p monitor.

If you want to keep your resolutions, though, there is a more sloppy/glitchy alternative that involves some coding. You could write a program that detects your mouse cursor's position and, when you cross the screenborder, jumps it to (y_pos/y_res_old)*y_res_new (where y_res_old is the vertical resolution of the monitor you went out of, and y_res_new of the one you moved the mouse into). This could be glitchy, but with your processor, it might be so fast that you won't even notice.

I recommend only doing this if the cursor is within 5 or so pixels of the screen border, that way cursor stuttering is reduced to the transition parts.

TL;DR: if you don't want to delve into some programming, or commission a nerd to do it, you are left without choices - turn down resolution or leave it.