Problem Bad performance since.... now

But what I really cannot get is:
Why is the performance on tracks like Nürburgring so bad (I have 45 to 50 frames with my settings) and on other tracks I have more than 100 FPS with the same settings.

 

Does that mean, the FPS are better with this settings all on? Or does it only look better?

 

Sorry yeah I kinda went into my own world..

I've always ran with only contact shadows on, because of the look of the shadows. They are still unfortunately a big drain on fps...

The biggest other way to save on performance is too use less track details