There are no up-to-date Performance BIOS Versions available for your mainboard. If Performance BIOS Versions ever existed, they were released in the early BIOS Development Phase for testing purposes. To be honest, I have not come across any Performance BIOS for your board yet and it is also highly questionable if such a BIOS would help you in any way (if it existed). Whatever problem there is (or not is) does not necessarely have much to do with the BIOS you use.
If you need help and advice on overclocking, please open your own topic in the OC Section of this forum, provide FULL system specifications (read the >>Posting Guide<< first) and post a list of your current Cell Menu settings for comparison.