In the same properties menu, check the box for "Disable fullscreen optimizations" to prevent frame pacing issues.
Since the game is no longer available for direct purchase on the Steam Store, you must rely on third-party retailers that still hold remaining stock of digital keys.
If your UI looks blurry or misaligned, use the "Change high DPI settings" option in the compatibility tab to let the application handle scaling. Buy Ninja Blade CD KEY Compare Prices - AllKeyShop.com
Locate NinjaBlade.exe in your installation folder, right-click it, and set the Compatibility Mode to Windows 7.