NEED HELP

HI i have problem with hashcat  3.6.0 when i start to crack i got this message

Cracking performance lower than expected?

* Update your OpenCL runtime / driver the right way:
  https://hashcat.net/faq/wrongdriver

* Create more work items to make use of your parallelization power:

  https://hashcat.net/faq/morework

My OS is Windows 8.1 64 bit my video is amd 7990 my video driver is 17.7.1

Thank you