Then here is my problem:

When I look extremely right or left (with 2 buttons) I've a big decline of FPS, like 60 to 10-15 fps... I don't know why.

Here's my configuration:

-Intel Core2duo CPU T5500 @ 1.66GHz 1.67 GHz
-3.00Go RAM
-Windows Vista 32Bits
-Nvidia GeForce Go 7600 256Mo
-Z28 version
-Logitech G25...

Thank for responses and sorry for my bad english

Yes, work fine with Z28

Vista

Nürburgring please !!!