I´m posting this just because I´m very curious about why this might happen and if any of you have any tips on this one: Despite my rig is rather a humble one (Q6600, ATI HD5870, 4GB RAM, Windows XP 32b), I´m able to play F1 2011 at max settings (DirectX 9 based of course) and it runs very very smoothly. I´m at my 2nd season, with Toro Rosso. No problems until I got to Silverstone, a few days ago. Suddenly, the game performance dropped greatly, with no apparent reason: no new mods, no new hardware, no nothing! I couldn´t get past 15FPS in the ingame benchmark, though it used to get past the 40s. I checked every possible cause, to no avail. I only could lower my settings to "High" and lower my MSAA to x4. And still got an average FPS of 28. I raced like this at Silverstone, Nurburgring and Hungary. And suddenly, I got to Monza, and to my surprise, again the game started to perform as usual, with higher FPS, so I could raise again my settings. Since then, I´ve been looking into this issue and still got no clues on why this could happen. I would greatly appreciate any ideas, so as to know what the cause might be if it happens again. Thanks a lot!