I have a Windows 10 laptop with 1440p screen and at 150% scaling, everything looks great and sharp.
The laptop is also connected to an external monitor (Dell U2415H 1920X1200) set at 100% scaling. But only on the external monitor, apps like Chrome, Adobe Reader, Office 365 look blurry, and icons appear disproportionately huge.
But system apps like File Explorer would look fine on the external monitor.
Since Windows 10 allows separate scaling for different displays, why is this still happening, and how can it be resolved?