Windows 10 just installed. A 4K laptop with standard 2k (HD) external monitor attached with HDMI cable.
Set DPI scaling of 200% for the internal display and 100% for the external. But - when an application is launched, it is displayed on the internal display correctly, and when moved to the external display - even though the scaling is correct, the rendering is poor = blurry (!!). So unless I am biased due to the 4K display, it appears that windows renders to the higher 4K internal display and then downscales to 2K (by some crude downsampling and some antialiasing possibly), instead of rendering directly to 2K.
Is this right? Any suggestions to force windows to render directly to 2k?
[BYPASSED] Installed an external 4K monitor and problem solved (obviously...).