Driveclub has issues.
That's never been denied by developers Evolution Studios and they seem genuinely contrite in their latest message to fans on Facebook:
"We can see that the majority of you can now get online, but we know that at peak times of the day it can still be hard to get connected, so we are still working to improve connectivity with every update to the servers.
We can also see that when you do get connected, some of you are having a hard time getting into multiplayer races and that posting leaderboard results can sometimes take a lot longer than you'd expect.
These connectivity issues stem from the same unforeseen server problem that we've been working to get on top of since we launched DRIVECLUB, and while we are getting on top of the problem now, we are still working round the clock to keep improving gameplay for you. This means there will be regular server updates in the coming days to get all of you connected and enjoying all of DRIVECLUB all of the time.
We will continue to keep you up to speed with the improvements we make and would like to thank you again for all of your feedback and messages about your time with the game so far - please keep them coming."
The developers also promised a free to play version of the game for PlayStation Plus subscribers which has failed to materialise. Presumably they're quite busy trying to get their retail product to work but with this, and middling review score, it might be too late to really claw back and customer good will.
Hopefully the situation will be sorted soon.