The vibrancy is way too high in his first sample image. Try setting your display driver colour management settings, to ‘default’. Don’t use the Nvidia settings for a moment. Have you installed a third-party shader previously? Perhaps re-install your display driver too. I select advanced options for the install of the driver, ‘custom install’ and select clean install, (or what ever that option is), Micha will know. Do you have any other games to try? Is this just related to MSFS 2020? Charles