Thank you for keep improving the miner, Thirtybird.

I've just updated though haven't really tried to do more tuning.
I'm getting like 1.6-1.7kh/s from a R7 240 2GB (buffer size 1752, lookup gap 3, g 1, w 256, raw intensity 1280, gpu engine 780, gpu memclock 780, gpu powertune -17), which is some way off what others are getting. I'm underclocking the RAM because performance is somehow very similar when I use stock settings.