On Cudaminer.... the hash rates on scrypt jane nf are lower on windows 8 by 33%. My vista computer gets about 3.6 mh/s and my 2 windows 8 computers get 2.3 mh/s. I tried everything I could even compiling Cudaminer on windows 8. All the combinations of the arguments ect. Do you are anybody here know why please. thanks
I've experienced some weirdness on individual systems as well. Like one machine I configured with a free Windows Server 2012 R2 trial version simply wouldn't run cudaminer at full speed. Somehow GPU utilization never went much above 80%.
But at that point I did not care enough to investigate.
Christian