Sometime in Nov or Dec of 2017 after a new release, the performance of my "farming" car (Ferrari F40) dropped.  Prior to the revision I could reguarly finish the 4 lap Le Man event (#21) in "Classic Ferrari Showdown" in under 14:49.  After the revision I was fortunate if I could do 14:55.  Since the 7.1 revision, I'm back to my old times. Wondering if anyone else who uses the f40 a lot noticed anything. 
From yesterday:

The last time I was able to finish in this time was Sept, 2017.