Love this! I love kart racers so it's really nice to have another good one to play.
I'm glad the AI is getting slowly fixed, they're still just driving into the walls for me and the lack of competition doesn't really give me an incentive to play past the campaign and I don't have anyone IRL to play with.
One issue I had though is that during the portal chase with Nicholas after you hit the jump thing that turns you around and you do a jump onto a jump pad if you land on the edge of the jump pad you can bounce into a side part of the road you're supposed to land on and fall, having to restart the race. It happened to me multiple times and the only way I got past it was by somehow bouncing high enough to drive over the thing that kept blocking me. I couldn't get far enough to land in the middle of the bounce pad to land in the middle of the road every time. I wonder if it's a high frame rate bug again like with the speed issue going up inclines.