I now have the perfect settings for my Bitaxe Gamma.

The Bitaxe runs at almost 50% higher hashrate than the stock version.

I ran a few benchmark tests and also upgraded the heatsinks and fans to ensure better cooling. I also upgraded the power supply from a 30 watt to a 50 watt.

I ran the benchmark test with the following script: https://github.com/adammwest/Bitaxebench

I would be very interested to know how you have tuned your Bitaxe.