using 2x 6970s in CrossFireX w/ 11.11b + 11.11 CAP2 the descaling seems to have stopped just going on the feel of it...
i express uninstalled all via Calalyst Install Manager ala Control Panel, i then went into Device Manager and uninstalled and selected delete the files for the Radeon HD 6970 devices, rebooted, ran (phyxion.net) Driver Sweeper 3.2.0, rebooted, then installed the 11.11b performance drivers, uninstalled the cap2 but running the 11.11 CAP2 installer and selecting remove... rebooted, and then installed the 11.11 CAP2 again
seems to work fine for me... in CrossFireX