With the heat, BENEFITS???

Hi Leutz, so I drive an Omega B 3.0 sport. I noticed that I have a noticeable loss of performance in the heat.. when I drive in the morning (temperatures from currently 22 to 24 degrees) everything is normal.. in the late afternoon (at currently 35 to 39 degrees) on the same track I have the feeling that I then lack performance.. in the suit as well as in the passage on the highway.. Do I lie there wrong and picture this only one or can it really be??? And how is that to explain??? Dan ke now for your answers +g+ greetings from the babe