Comment 13 for bug 1938102

mirh, could you test setting the environment variable QT_SCALE_FACTOR_ROUNDING_POLICY=PassThrough before starting Mixxx from a command prompt? If this works well without odd looking artifacts we may consider setting the rounding policy to passthrough by default.
https://doc.qt.io/qt-5/qguiapplication.html#setHighDpiScaleFactorRoundingPolicy