I don't think the factor already increased (I am running the R9 on it and the rate is still the same...)
Try using the -L2 -t kernel, it works rather well for me with the gtx780ti (now for N=11 you can tune it on an UTC pool they'll be happy to see someone...)
Thanks man. I looked and I was only getting around 50% gpu utilization. I ended up having to reinstall drivers to get it working again. Not the first time I've run into this either. I'm getting ~220kh now, but I'll give those settings a try too, see if I can squeeze a little more performance out of it.
Since the nfactor change to 10 I've been getting 300k from my 780s using (from autotune): -l T12x20 -L 1