Alright mate!
The new tracks do cause a PO hit for sure, I don't bother with them...they're amazing, but the FPS is awful. The pit straight is usually horrible, you've got pitcrews, all those flags, and the extra sounds to proccess, so its no wonder I suppose.
On the crowd issue, I think you're right they sure hit the PO...I'll have a poke around the graphics.cfg for you as I dont know off hand.
With all new cars, if I switch to tv camera at the start, PO hits 250% +, but with old gp4 cars, stays below 100%, perhaps the gfx card is passing over some stuff to the cpu, I dont know. Obviously new cars push the gfx card much more, so maybe the gfx card is as much a bottlneck (in gp4) as the cpu? Hmmmm
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She says brief things, her love’s a pony
My love’s subliminal