Hackathon is underway. As soon as the code is in git master and working, I will inform the forum.

EDIT: I've received one too now.

I have had no issue before in this setup only when I updated to the latest version of cg miner as I don't get this problem on ver 2.11.4

Q: Which AMD SDK is the best for cgminer?
A: At the moment, versions 2.4 and 2.5 work the best for R5xxx and R6xxx GPUS.
SDK 2.6 or 2.7 works best for R7xxx. SDK 2.8 is known to have many problems.
If you are need to use the 2.6+ SDK or R7xxx or later, the phatk kernel will
perform poorly, while the diablo or my custom modified poclbm kernel are
optimised for it.

Q: Which AMD SDK is the best for cgminer?
A: At the moment, versions 2.4 and 2.5 work the best for R5xxx and R6xxx GPUS.
SDK 2.6 or 2.7 works best for R7xxx. SDK 2.8 is known to have many problems.
If you are need to use the 2.6+ SDK or R7xxx or later, the phatk kernel will
perform poorly, while the diablo or my custom modified poclbm kernel are
optimised for it.

That would explain why I'm not able to push my 7970 above 600 with this release.

it's working fine with 13.1.

Headsup for 5k series users.

Ok. I've expressed uninstalled 13.2 Beta 7, ran driver sweeper in safe mode, rebooted back into safe mode, did a registry clean with registry clean expert, rebooted. I've installed 13.5 Beta 2 on my Windows7 x64 machine. I am guessing with supplied SDK, as GPU-z showed I have opencl enabled.

Mining on cgminer 3.0.1-windows scrypt.

I don't see any increase nor decrease in hash rate for litecoin mining with my two 5850's on 13.5 Beta 2 with cgminer 3.0.1-Windows scrypt.

So far, so good. This is good news for me so far, prior, anything over past 13.2 beta 7 drivers, I had sensor detect problems with hwinfo64, and overclock problems, these problems are solved with this latest AMD driver I am using now, also this driver is good for 7k series card I am guessing, so, if and when I get a 7950, I should have no problems, hopefully.

~Cheers