Aston works best with a 'meta' setup at COTA, and my approach here does try to keep the car in normal shape throughout the lap.

the Q setup is very aggressive and the steering wheel needs to be straightened before giving it 100% throttle. the power map here is amazing and the car will gap anything on the back straight.

the LFM setup is the quali setup with fuel adjusted for 25 minutes.

the ENDU setup is set for 65 minute stints - perfect for 1hr sprint or short endurance - pads 2, a touch stiffer, more consistent, and prioritises keeping the rear in check to save tyres and maintain balance all stint.

there's a lot of throttle control required throughout the lap. if you're struggling with exit oversteer, the rear ARB and slow bump can be reduced.

if you're having issues on entry/mid corner, check the data and try to imitate and understand the difference in inputs - most likely the brakes! COTA is one of ACC's greatest challenges, and the driving style for the Aston begs a lot of maintenance and precision from the pedals.

any issues, feel free to DM or ping me on discord :-)