[ZetaH]

I had the same issue with my 14,0" WQHD (2560x1440) laptop screen and my external monitor. I wanted to scale up only the laptop's screen so that I can read the text on it, but then my external monitor got scaled too large.

After using it for months like that I solved this by simply setting the resolution on the laptop to 1920x1080, and scaling to 1. I felt really stupid after that I did not do this sooner.

[seabrookmx]

That's not an optimal solution though, because you're relying on your screen to do non-integer scaling and you'll have blurrier fonts etc. as a result.

If your software supports non-integer scaling it can render things with that knowledge and give you crisp edges on the edge of text and UI elements.