Q. Why are the cautions still not working after the patch?
A. The caustions are working you just need to select the correct option in the 'CHOOSE A RACE' menu. There are two options:
Casual - Damage - Cosmetic, Caution Flags - Off, Driver Assists - On, Custom Setups - Off
Hardcore - Damage - Full, Caution Flags - On, Driver Assists - Off, Custom Setups - On
By default the selected option is Casual and this means that Caution Flags will be set to off all you need to do is select Hardcore and Caution Flags will be set to on.
Q. Why am I being kicked from the lobby just before the race starts?
A. What the game now does is just before a race starts it checks to see if everybody can see each other and if there is somebody who has a bad connection in the lobby that some players can't see the game will remove that player. A way to resolve this problem is to ensure that your NAT is set to OPEN you can find a guide on how to do this HERE