for some programs middle click doesn't move them properly. one example would be f.lux (https://justgetflux.com/faq.html#install). in regular 100% scale it works fine, but in 125% it moves diagonally, so if i start it in lower right corner of the right monitor and press middle click to move it to the left one, it ends up going up and right a bit, appearing on both monitors. is there a way to fix this?

here it is. is a protected attachment okay?

yeah. i only changed the setting in appearance and personalization > display to 125%, didn't try to make it per monitor or anything. both should follow the same settings, and the only real difference between the two is that one's a 60 hz tv using hdmi, other's a 75 hz monitor using displayport.

while messing around with my settings to change the sizes of some elements (personalize>window color>advanced appearance settings) i found what causes this. border padding that's 5 pixels or thicker causes this behavior. if it's below 5 it works as it should. 5 pixels is the default for aero theme.

out of the ones i have, memory cleaner is also causing this.

https://www.koshyjohn.com/software/memclean/