1. Try turning off all your your remaining assist.
2. Use setups from HERE
3. I personally have throttle linearity at 100
Thats about it really. DRS,ERS,FUEL usage at the right time can easily knock down that time of yours. I recommend going into time trials with a setup from above and if your trying to improve in “Solo Career” or “My-Team” MAKE SURE YOU FIND A SETUP WITH THE SAME ENGINE then go to time trials. Lastly turn on Overtake hold in the menu (in controller settings last tab)
It’s gonna take time to get use too and you might have to reconfigure your controller