I used the Ben's Nordschleife setup as well, although I increased the front toe value and decreased the rear toe value by one click each. Not sure how much of a difference the track temperature makes, but since it doesn't make me eligible for pro ranking, I might have to try again - I don't think I can put down a lap similar to this one again, though.
It seems to make a difference in top speed by 2km/h, also the higher temperature might help heating up the tires faster.
I wish there were set rules for the RSR leaderboard that are unmissably stated - I actually feel kinda bad for my lap now.