Display Configuration change Scale on the fly?

Support Graphics & Display
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1

On KDE Plasma 5.22.5 (the latest) with Xorg / x11 and 3840x2160 scale 2 and Mesa Intel UHD 630 driver I would like to change scale to 1 without restarting. I believe that used to be possible with Display Configuration but I am not sure.
The reason I would like to do that is because Shotwell does not handle HiDPI scale 2 settings well, it displays pictures blurry. (No, I do not seek advice on an alternative photo program).

I tried xrandr --output DP-1 --mode 3840x2160 --scale 1 but that does not do anything.
Is there a way to get what I want?

Thanks.

2

Sorry, found this: https://unix.stackexchange.com/questions/596887/how-to-scale-the-resolution-display-of-the-desktop-and-or-applications

and export GDK_SCALE=1 did the trick

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