You're actually getting more than 12% on the main threads O.o, something you don't see on single cards.

SLI must be multithreaded, anyhow... not the point.


I haven't found a way to test in fallguord, its fairly active on Cerberus.
But yes, I suspect the drivers D3D9 recompiler isn't optimised for the 9x0 architecture at present.