After a lot of testing I have discovered that the lastest Nvidia drivers are incompatible with Swat 3 on Windows 7. If you revert back to version 353.62 you will once again get good frame rates. If you play Metal Gear Solid 5, Mad Max, Ashes of Singularity, or Killing Floor 2 you won't want to revert since they contain "game-ready" drivers.
Breakdown of recent drivers: 355.98 Sept 22, 2015 -
bad frame rate355.82 August 31, 2015 -
bad frame rate 355.60 August 13, 2015 -
bad frame rate 353.62 July 29, 2015 - good frame rate
353.30 June 22, 2015 - good frame rate
353.06 May 31, 2015 - good frame rate
352.86 May 18, 2015 - good frame rate
350.12 April 13, 2015 - good frame rate
347.88 March 17, 2015 - good frame rate
347.52 February 10, 2015 - good frame rate
347.25 January 22, 2015 - good frame rate
347.09 -
bad frame rate 344.75 -
bad frame rate 344.48 -
bad frame rate 344.11 - good frame rate
You can help us to get a fixed driver by posting in the Nvida forums or by filling out a short bug report:
Feedback thread for Windows 7 & 8 (driver version 355.82):
https://forums.geforce.com/default/topic/879824/geforce-drivers/official-windows-8-1-windows-7-amp-windows-xp-355-98-game-ready-display-driver-feedback-thread/Driver Bug report (they call it a survey):
http://surveys.nvidia.com/index.jsp?pi=6e7ea6bb4a02641fa8f07694a40f8ac6