Set custom DPI for Mathpix, Nextcloud, etc. on Windows (any Qt app).
Target:
C:\Windows\System32\cmd.exe /c "SET QT_SCALE_FACTOR=1.3 && SET QT_AUTO_SCREEN_SCALE_FACTOR=0 && start mathpix-snipping-tool.exe"
CWD / Directory:
"C:\Users\YOURUSERNAME\AppData\Local\Mathpix\Mathpix Snipping Tool\"