Photos app - cropping is choppy

This is a problem that I've had with my Windows 10 machine ever since I built it, even after I've changed motherboards and graphics cards, so I'm really stumped as to what's causing it.

When I click on any photo to edit it in the default Windows 10 photos app, cropping the photo (by clicking Edit & Create --> Edit) and then dragging the selected area, it crops in an extremely "choppy" manner, it never drags smoothly. I can drag the cursor nearly to the other end of the screen and the crop doesn't "catch up" for a few seconds. Why is there so much lag?

I thought maybe this was simply how this app behaved, but I was able to use another computer with Windows 10 and tested it on that one, and the cropping is very smooth and how I imagine it should be. Why is it so choppy on mine? I am using a 4K screen and the other computer I tested it on is a 1080p monitor, so I'm not sure if that could be the culprit.

It's a badly optimized application. May I suggest to just use mspaint?

Thanks--that's disappointing, but yeah, there are other apps I can use.

I just wanted to say that I've solved the problem. Turns out the problem was my Corsair mouse. I recently bought a Logitech MX Master and the problem is gone--no more choppiness. Plugged the Corsair mouse back in just to be sure and yep, cropping is laggy. I never would've thought the problem was the mouse. I'm so glad this is fixed.