he probably made the physics rely on how good your game runs and didn't realize it because his computer is too good.
So basically, the higher the frames, the faster the car goes
I've been using unreal for about 3 years, it isn't basic car mechanics that is the issue, it's a game physics thing. Look at this link it explains it https://medium.com/polars-development-blog/getting-physics-right-for-polars-in-u...