Scaling two monitors, different resolutions? 4k &1080p

Hello friends,
I have a BenQ 4k 27" monitor and a 24 inch 1080p monitor. Both work great with the RX580.

I’ve had to 200% scale the 4k for reading which makes the 1080p monitor text and menu bars crazy big.

I’d like to run the 4k @200%, and the 1080 @125%.

Any ideas? Can you give me a hand in learning how to do this? I’ve read something about xrandr? But the info is spread out.

Thank you.

  • Distribution : Arch Linux w/Plasma (fully updated), Xorg.