The AI lap time in practice at Malaysia is around a 1:39 and I'm only able to do a 1:42 in a Toro Rosso (times are on prime tyres). Would 0.85 be a good value? Or should I do some trial and error.Look for Track_difficulties tab and there will be track id and difficulty names as Easy, Medium, Hard and Expert. Medium is for Semi Pro and Hard is for Professional. Change the value for the track you wanted
Also I'm around 0.6 seconds off the pace in Sector one and loose time in sector two (AI is around 0:58.000 and do around a 1:01:000).