Thanks for the update Ech0es
Speedfan results are fine so no concerns there.
Stick with the drivers that bring you stability until the next ones are released and try them.
What many people are of the impression of is that they must have the latest drivers, this is often a misconception.
Driver updates are often released to address known issues and unless you are having that particular issue you do not need the update and installing the said driver can actually create the very issue it is intended to resolve.
One of the tools that I often use for troubleshooting is PCPitstop and that will often suggest updated drivers in the results, I never suggest that the OP updates any driver that is not relevant to any issue/s that they are having, this approach to my knowledge has never let me down so far.
Roll back the drivers and enjoy the cards good performance and remember the old adage "if it ain`t broke don`t fix it"
As an asides other important software such as the OS and AV programs such as Avast & the many others available should always be kept up to date to keep your computer performing to the best that it can while ensuring that it is also secure and keeping out the bad guys.
Some information regarding driver updates http://lifehacker.co...date-my-drivers
You will note that the author Whitson Gordon also has the "If It Ain't Broke, Don't Fix It" take on things (it is a well known saying and there is no plagiarism going on here
I hope that things stay stable with the rolled back drivers and please keep us posted on how things are going or if there is a new driver (hotfix) released specifically to address this rather odd behavior.