I assume Windows 11 handles high DPI monitors a lot better than Windows XP, which must add some complexity to graphics rendering.
Raw power that we have now in our PCs and laptops are enormous and some better high DPI handling cannot justify why everything nowadays is so sluggish an laggy.
YMMV. I think "a lot better" is an overstatement. You have some fractional scaling which, depending of the program, might do what you need. But the fact that you cannot change fonts and colors is a real issue. Not everybody loves gray on gray.