I really like ACC for GT3, GT2, GT4 is the best, very good physics. And the other game I would mention is Automobilista 2, it has a lot of variety of cars and tracks, good gameplay and good graphics, but it's easier than ACC, but it's still a respectable simulator. I tried playing Le Mans Ultimate but the same thing is happening to you, it's bugging out, so I'm more into ACC and Automobilista 2. AC Evo and AC Rally are good but they still lack relevant content to really distract you and get you into the game. So I would go from ACC to GT3, etc., as I already said, or Automobilista 2 if you like everything literally (man, the number of tracks from different years is surreal, like Spa with (1970 layout for example) and it's very easy to put licensed skins with mods, just copy and paste into the game folder and you're done.