A big reason the eSports drivers are so quick is that they have the least steering input possible. The technique with the F1 games are that you attempt a corner with the least steering input possible, and only keep the steering angle the same until the end of the corner, while using your throttle to manage speed. I found this trick to gain me a ton of tenths. It reduces tyre wear and allows you to go through corners a little bit quicker as you're biting the corner correctly and incur little to no understeer. See the eSports laps of some of the F1 circuits, and how little steering angle they can get away with.