CryptoDredge is faster for phi2  but crashes for me alot. I had to stop using it. I get hard crashes that lock the rig up and needs a reboot. Had to go back to z-enemy which runs fine no crashes. I tried everything with CryptoDredge. I changed intensity, i removed overclocking, the last try i had no overclocking and intensity 4. It worked for about 4hrs and then hard crash cuda error unspecified launch failure.