Gurm In the operating system. It's not hard.
FontSmoothing to 0
while not necessary, I also FontSmoothingType to 0
Though, if you right click on the app properties and fiddle with the hidpi stuff where you can change between application, system, system (enhanced) you may notice differences, depending on how MS coded it.. I use application for older applications to let them show sharp text instead of blurry. system is blurry, but enhanced is an improvement on the blurriness.