Wow, thank you for the long answer, AniMerrill!
Oh, and I thought the frame rate problem would be only my dilemma because I have no graphics card at all.
Okay, next time I will make the camera partly player-controled by the right stick. ;)
Yeah I have a NVIDIA GT 730 which was a decent graphics card about a half decade ago and seems like it should run this fine, but for some reason it still struggles a lot. Ideally with how low poly the cars and world are, this game should run just fine even on your integrated card with good use of culling and some other techniques to save system resources (although idk how to do those things in Godot).
And yes, having some camera control would help. A lot of racing games actually tend to have a fixed camera that you can switch to different positions with a button (like Y on Xbox or triangle on Playstation). There will be one for facing forward (default), one for reverse, and the fancy ones will even have a first person view from the drivers seat. Maybe that would be overkill, but it's an idea.
If you ever made a single player racing game (or multiplayer with AI or whatever) with more tracks and options, I would definitely check it out though because you got the driving physics pretty fun here. Also if you didn't see it, ereborn from the server did a playtest of your game on stream you might be interested in watching.
Oh, cool! Thanks for the hint. I watched his Let's Play with his wife - and as I can see you have been watching the whole video!
Wow, you seem very dedicated. ;-)
Right now, I want to try a couple of different Game Play techniques instead of investing a lot of time in one game. - And I am stress-testing the Godot-Engine ;) (Graphics, Tools, Workflow...)
Keep it up! :)