Board Thread:Game Discussion/@comment-34988007-20180313155727/@comment-27798333-20180313170719

I think that since races only last a few minutes, there are nearly always players signing in to the next race. When you hit the race button, it just allows you to see those other players doing the same thing you are. It doesn't actually send out invites. It's just looking for players who are signing in, who might be (what the game thinks) are good matches for you and groups them all together. The more players there are, the faster it happens, and the fewer there are, the slower.