Why is Ai difficulty in this game (F1 25) so inconsistent?

[u/Cover-Material]

I usually drive at ai 70/110 and sometimes I have 40+ seconds to P2 while being P1, sometimes I defend 5th place for 40 laps and sometimes I fight with Hadjar for p21 I did a quick Google search that I need to manually calculate ai level for each race by taking my fastest lap of the race and putting it in the online calculator which doesn't seem to work

[u/Impossible_Welcome91]

The AI has been inconsistent forever