It seems like the Twinmotion configuration may have encountered an issue that is preventing the resolution of the program from automatically adjusting. Please try deleting the Config folder at C:\Users\%username%\Documents\Twinmotion2022.2\Config, then launching Twinmotion to see if the interface looks clearer.
You may also want to check that the Twinmotion Quality settings in the Edit > Preferences > Quality menu are properly adjusted. With an RTX 3070, you should be able to use Ultra quality on simple projects without issues.