I see, at the right-left-right section after the backstraight you are far away from the curbs. And having the race line on is now the best way to learn a track. If you know the track enough it's better to find yourself out how to drive the fastest line for your driving style.
And driving fast isn't the only important thing - the lap 1, backstraight thing was unnecessary. Leave him some space and drive a bit more on the right, but don't just push him away.