This is currently my major problem with Plasma 6, no matter what I tested it always produces blurry output with any scale under 100%.
On Windows 10 it scales perfectly and everything appear small and correct on my 15"6 laptop screen (1366*768), even Ubuntu MATE scales the icons and fonts perfectly. Only KDE Plasma is forcing its big icons and UI in my laptops with low resolution.
This makes working with apps having a heavy and loaded UI nearly impossible.
For example, Kdenlive is a nightmare to use with 100% scale
With 85%
Anyone succeeded in making scaling under 100% to work?