It is simply high Windows DPI to counteract blurred font appearance and icons as of version 5.81!
With Windows 10 display settings with 125%, 150%, ... DPI it is with some monitors very noticeable whom the anti-aliasing and clear type no effect, the picture with many desktop programs is quite blurred, this is from MeinPlatz 5.81 now taken into account and ensures a headache-free work.
From 5.81 please activate with SetProcessDPIAware (... see Image-1 Point 1 to 3)
Important: Program restart is required!
Helpful infos (c) Microsoft
When you use a high-DPI device, such as the Surface Pro 3, Surface Pro 4, or Surface Book with external monitors, the following issues occur: Elements such as applications, the taskbar, icons, toolbars, text, and dialog boxes become blurred displayed. The text in applications or in the Windows interface appears blurry. Although these symptoms are possible when using a single monitor, they are more common if you use multiple monitors with different screen resolutions. The symptoms also occur when the hardware configuration changes. For example, when docking or undocking a device that uses external monitors, or disconnecting an external monitor from the device. The display information is determined when users log in to the system. Logging out and logging on will reset the display information and improve its behavior. However, the problem occurs again when the monitor configuration changes during the same logon session, such as docking or undocking the device, or disconnecting an external monitor.
... support.microsoft.com/windows-scaling-issues-for-high-dpi-devices !
FAQ 9: Updated on: 21 October 2019 19:10