A fix was implemented in Serato DJ 1.9.6, which may affect Windows 10 computers with certain scaling settings. This may result in unexpected blurriness and illegibility.
To avoid this, simply adjust scaling options to multiples of 100 (100% or 200%). You can find out how to do this in our Using Serato DJ with high definition displays article.
NOTE: It's important that you do not set your scaling to a setting above 150% if you are using a Full HD (1920 x 1080) resolution setting, otherwise Serato DJ will perceive the screen to be set to a resolution lower than 1280 x 720 and refuse to launch. Using a scaling option of 200% is only recommended for UHD (3840 x 2160) resolution settings.