If it has the same main problem IMO as LBP 1/2. The lag. Loading times are really bad to and from the beta it seemed to loading times were quicker so thats good. But LBP 1/2 you could barley play with 4 people without a good amount of lag half the time. It was tolerable as it wasnt THAT bad all the time. But In a racing game, lag like in LBP 1/2 is unacceptable.
I'd focus more on the lag from ModNation Racers. Which ... was still pretty bad, IIRC. Did they ever fix that? Still, should do a better job at scratching the creative itch for kart racing fans, and offline racing will be fine.
"The best things in life must be taken by force!" ~Captain Khan