Alvaro, I only have to say, this game is a box of tricks.
For all these years I've seen such things as the double pit-stops, unbelievable stupid strategies or, on the other hand, genius udercuts, I can remember the case when the leader
runs out of fuel on track ( belini/holemad Hungary a couple years ago ) with proper magic data inserted and where anything like that never happend before and after,
with totally right performance files and so on...
Maybe, your case is a one from that row ) It's not because of the track, I think.
I like racing when the weather changes, though I have another problem - the game sometimes stopped saving the weather conditions, so the playback goes wrong.
Or the conditions were saved but my car runs out of track... I tried to check it out but wasn't a great succes.
So I prefer rain only in qualifying.
A week ago I've raced the Tsauer Imola ( GP3-2k ) in similar conditions but from dry to heavy rain. There were some rivals' spins around, but I cannot say they were too slow.
The track is fine, though I never was extremely lucky at Imola at all ) Guess what happened? Playback was lost at 22th lap when the rain began harder, thogh I didn't break the drive
by intermediate saves or reloads, running from start to finish...
So, the strange things happens. Moreover, if they would they obviously could )