You have the right idea, but when I looked under my services tabs under Administrative Tools I did not see anywhere to set the CPU usage. Let me know if you can do it from there.
Try the client.cfg tomorrow and let me know what happens.
Your config file has a setting CPU=75 so I assume that's a signal to the client to use no more than 75 percent of available CPU capacity. I've successfully shut down the program either by closing the console window or by going into services and stopping the service, or by logging off (of course then it starts again when I log back in) so I know how to control it running or not.
I'll let it run today and see what it does. I had let the extra SSE boost be turned and since your config file doesn't mention that, I'll read the log file to see if it's a setting that's managed here or at the host. Maybe that's spinning the fan up.
Thanks for the help!