So, I just did my first custom race. 15 laps at Spa, ended up lasting 37 minutes. Qualified in 9/24, finished in 6th, ~80% AI difficulty.
It was fun. Next time, I'll set it at either 2x or 3x tire wear for such a race. AI stopped twice for tire changes.
This was the first time I did a race over 20 minutes in length. Im surprised at how I stayed concentrated throughout the whole thing. Didn't stop to think about anything else for a second... Time flew right by.