I'm currently using these settings.

-I 13 -w 256 --thread-concurrency 8192 -g 2 --gpu-engine 1040 --gpu-memclock 1500

With these settings, 2 cards run at 100% speed and 2 cards are running at like 5% speed.

I tried to put in --powertune 20 and this briefly enables 3 cards to run at 100% speed, then my machine crashes.

I realize there is no one replying here, but I don't know where else to go for information.

Help please! =o