I tried those drivers and sadly it didn't fix my problem.

Is there a way to roll back to an earlier driver version?
Yes. Do you use 64-bit Vista or 7? http://support.amd.com/us/gpudownload/windows/previous/Pages/radeonaiw_vista64.aspx for downloads for all of AMD's previous driver releases. 12.1 should work fine, as should the 12.2 previews (in theory; never tried them myself).
Just scrub the 12.2s off your system...I usually do this by going to the Uninstall/Change a Program control panel, selecting the AMD Catalyst Install Manager, and hitting "Change." You'll get options to uninstall the drivers from there. Let the uninstaller finish, reboot, install whichever driver set you've picked out as a replacement, and reboot again. Should be good to go.