This is most likely related to this issue https://github.com/Orama-Interactive/Pixelorama/issues/159 and it may be resolved if we change some settings. Are you using an hiDPI monitor? Blurriness can also come by setting the display scale of the application (under Edit, Preferences, Interface) to a non-integer value. Make sure it's set to either 1, 2, 3 or 4 to avoid any blurriness.