Note that a polemic made surface about a bug in the pilots Nvidia 169.04 whose consequence was that the reflexion on the surface of water was déforméé since it was not brought up to date rather often. Being less often calculated, the performances at least increased, all under certain conditions such as the 1920X1200 with AA4x in mode DirectX 10 (+30%). We thought at the beginning that it acted of a bug of the play. But it proved that to re-elect the achievable one so that the Nvidia pilot cannot any more detect it the problem corrected. What to have some suspicions on this bug.
We contacted Nvidia on this subject which confirmed the bug and the profit of performances which it could involve. Nvidia provided us a driver which does not pose any more this problem (169.05)