windows 8.1 scaling issues with 4 k display

got a 15 inch 4 k display on my laptop and im having some issues with some programs. for example, the steam login screen is extremely small, same with battle.net client login screen. ive turned off dpi for both, if it would be on, id have to deal with them being too big and blurry. anyone know what to do here ?

thanks in advance

Seems like Windows 8.1 doesn't have support with 4K monitors yet.
Wait until Windows 10, or else research it.
Hope it helps!