what i meant is setting the lcd display that has the native resolution at more then 1080 to 1080 resolution and comparing it to a native 1080 display would usually would not give the same results, as running the display at lower resolution (not scaling) would usually give you blur.
also fractional scaling works ok'ish in linux' but it's "fake" actually in that it uses xrandr to create a 2x resolution and show you scaling of that. and it uses more resources especialy with external monitors with different dpis.
No one ever runs displays non-natively to get any of the scaling being discussed here.
Fractional scaling works like that everywhere that I've seen. OSX does the same, and I'm not sure about Windows. The alternative would be properly scalable GUI toolkits which then creates other difficulties in mixed-DPI situations. I don't use that though. Font scaling is more than enough to get 1.3x scaling. Has been for years, and doesn't take the efficiency hit. It doesn't solve the mixed-DPI situation either though.
also fractional scaling works ok'ish in linux' but it's "fake" actually in that it uses xrandr to create a 2x resolution and show you scaling of that. and it uses more resources especialy with external monitors with different dpis.