BMW M1 PROCAR oversteer after 2-3 laps?

Hello,

I am training for the SRS BMW M1 Porcar race of this saturday in Adelaide.

Before the update I was able to do some laps (10 more or less ) in the same time range 1:25 - 1: 26,so I was able to be regular but after yesterday's update when I am in the lap 3... the oversteer is uncontrolable not sure why. I am missing something? It's really annoying not sure if it's because of me, or I am missing something...honestly not sure. I tried diferent setup option, increasing roll bars decreasing rollbars, Spirngs etc etc and always is the same, in lap 3,4 uncontrolable oversteer.Also is strange because in lap 1 I am expecting more oversteer (cold tyres) but the 1 and 2 laps are my fastests and regular laps...reallly strange. Anybody has the same behaviours? I am missing something?