After installing gvim in windows, the default scaling is too tiny in 4k monitors. To fix correct scaling, so windows looks normal, follow below

- Locate the gvim.exe binary (right click desktop shortcut and select "Open file location") it typically is found in "C:\Program Files\Vim\vim82" or "C:\Program Files (x86)\Vim\vim82"
- Right click file gvim.exe and select properties
- Select "Compatibility" tab
- Click "Change High DPI Settings"
- In the popup, section "High DPI Scaling Override", select option "Override High DPI Scaling Behavior"
- In Drop-down "Scaling Performed by", select option "System (Enhanced)"
- Click OK and then OK to close