AI has strange Pit Strategies

I did a race against the AI in 1993 Spa with Group C cars. I had the Tyre wear onaccelerated and fuel consumption at 3x. I did 2 stops in the 45 minute race. The AI did at least 4 stops. (Some even 8 stops). Therefore I won the race with ease. Is this an known issue?

 

The AI already have accelerated tyre wear compared to the player. Using further acceleration is almost guaranteed to lead to excessive pit stops.