ok this won’t let me go as i’m a vehicle idiot (ex mechanic) while trawling the forum i found a thread with tips on improving UE5 performance, after changing the setting i tried the advance vehicle template again and it worked great (first try) so here’s the settings i changed
Dynamic Global Illumination Method: None (instead of Lumen)
Reflection Method: Screen Space (instead of Lumen)
Shadow Map Method: Shadow Maps (instead of Virtual Shadow Maps (Beta))
hope this helps.