I had a similar experience but I though the bug was putting extra resource to AI give you extra resource in practice events anyway (even if you select reduced)
I made the same post about speed in RD as well I play with all reduced stuff for player: money-experience (both team and driver) and RD
https://answers.ea.com/t5/General-Discussion/RD-in-my-team-tooooo-fast/m-p/12678266#M4774
i go to the extend of not playing practice program at all and only use the automatic lottery practice program simulated so I end up with half of the bonus or less per week
and I still get the best car just after one year starting from novice and bypassing the interview (so starting literally with the worst car)
my team is crazy easy to get the best car in one year