I think that we should get the mouse boosting to stop, before trying to mess with the actual boost algorithms.
Some general questions:
What is your active power plan? Have you adjusted these in any sort of way?
Have you adjusted any BIOS settings? If so, save your current profile and then reset to default.
If this is a fresh OS install, I'd go ahead and wipe it and re-install again. It's a convienent time to do it, if you have nothing to really lose in terms of files.
For the thing about boosting while moving the mouse:
This exact thing happened to me, except the computer was heavily loading when moving the mouse on the screen (instead of boosting) with my i7 3770K build. I ended up fixing it by using a different mouse and throwing that one away. Do you have a different mouse to try?
It can also be your mousepad, that sounds stupid, but true. If your mousepad has a bunch of small particles on it, it can cause the mouse to think it's moving very rapidly (although a very short distance). Hopefully this idea or the one above fixes it for you. If not, we'll have to dive in deeper!
This will at least get the ball rolling somewhat.