36 months ago
If you've recently updated to the latest Nvidia driver and seen a decrease in performance or had issues with locked memory clocks Nvidia has released a hotfix that you can find here: http://nvidia.custhelp.com/app/answers/detail/a_id/4260
Note that the official WHQL driver still has issues and the hotfix is not currently being pushed via updates inside of Geforce Experience or directly on their driver download page. Give this a shot and hopefully it fixes any problems you may be having.
EDIT: Driver has officially been pushed to geforce experience - removing sticky