I tried to search for performance issues and to see how others had fixed theirs when I noticed a lot of people say that they were going to do a driver for AMD that make SR3 work.

Sooo... Did they ever release one?

What specific issues are you having? I had some frame rate problems shortly after release, but it has been running great for months now. Do you have the most recent http://support.amd.com/us/gpudownload/Pages/index.aspx and http://sites.amd.com/us/game/downloads/pages/crossfirex-app-profiles.aspx and is your install of SR3 up to date?