Now sir, you forced me to create an account here. Becouse I cannot thank you enough! Since release I have spend several hours trying to find SLI profile that might actually work. Till I have found you I'm happy to say that this settings work with 344.60 (at least on my PC). Stutter gone, FPS at 90. GPU's load is 50-65% and stable (not skipping from 50 to 70 every second as did in many previous attempts).