I have compiled the new repo for 64 bit. Meant i had to compile a 64 bit libcurl but now im getting up to 228khash/s but at the same time getting some nasty cpu usage.
This is a 2.4GHz Core2Quad overclocked to 3GHz.

http://s24.postimg.org/yfxb7fa4l/Capture.jpg

Adding an extra sleep before MyStreamSynchronize returns seems to keep it down without impacting performance.

http://s18.postimg.org/mr5rvzk49/Captureb.jpg