It does seem to indicate your CPU is really busy, but then, if you are 10 boxing and streaming it likely would be.
It probably doesn't help that 4 of the cores are showing running a current value of 1200MHz! Try setting your power profile so the minimum CPU is 100% as outlined http://www.isboxer.com/wiki/HOWTO:Di...ing_in_Windows

On another note. Have you monitored the running processes to see what they are doing?
You can use something like perfmon to monitor all the processes on your PC for user/privileged/total CPU time. Then see if there are any processes chewing up CPU that you can shutdown, make sure that none of the remaining processes are exceeding 10-15% of total time in the privileged time (actually this on is subjective on the application itself, but it is more of a general rule) because this would mean it is busy managing resources rather than doing the processing to make your game faster.

You might also consider using a capture card (some fancy setups even use a separate streaming PC) if you don't have one, as this will offload a bunch of tasks that are used for capturing/converting/compressing your video stream from your CPU.