Yeah lag was a MAJOR issue that race as on the first lap wayne slammed into me causing me to hit Xerks, Stav and a few others giving us all damage (Xerk and me with all wheels and engine damage) and surprisingly wayne you had full damage on my screen but you could still drive it like there was no damage. Hence lag issues.
I know wayne couldn't see me on the track hence the reason for the 2 incidents. However i could see everyone on track. I'd recommend when you host these races in future to ensure everyone clears their network cache in the GT5 menu before joining the room. Helps with lag and issues seeing other drivers. Hopefully preventing and further trouble for you all.
I watched the replay last night and had a bit of a laugh at all the incidents due to lag and people not knowing other cars are around them. Was quite funny.