I think the Stamina attribute of drivers has too much effect on qualifying and first stint performance. To me Stamina implies endurance. But from some tests I have run Stamina's main effect is in the first stint. The middle stint it seems to have very little effect and the last stint only about 35% of the effect it had in the first stint. This seems backwards to me. In addition this skews driver training toward 100% stamina training which steals some of the finesse and subtlety away from driver training.
If it remains this way it should be renamed Vigor.












