Você precisa desativar as opções de dimensionamento de DPI .
Estes são ativados por padrão nas versões mais recentes do Windows.
Disable DPI virtualization for the application. To do this, right-click the application’s shortcut and then click Properties. On the Compatibility tab, select Disable Display Scaling On High DPI Settings, and then click OK.
This causes the text in the application to appear clearer. However, if the application does not correctly handle high DPI settings, this procedure may have adverse side effects such as truncated text and incorrectly sized graphical elements. Lower the overall Windows DPI setting. To do this, open the Display item in Control Panel (or search for "dpiscaling" from the Start screen), and then adjust the slider under Change the size of all items. You may have to click to select the check box for Let me choose one scaling level for all my displays and then change the scale to 100 percent.
Be aware that on very high-DPI displays, this may make screen elements very small, and some text may become difficult to read.