Process Lasso is a diarrhaetic for windows processes that hog the cpu and block the responsiveness of your machine.
With the out of the box settings it makes the system more user friendly so whilst one process is falling on its arse, the next can continue without problem.
Edit: I’ve since uninstalled Process Lasso, it was interfering with a few other apps but whilst it would recover usability to my machine when in dire straights – it would also reduce the priority of important foreground processes when I needed them running at regular priority. I’m sure that if you were persistant, you could tweak the settings and the thresholds before lassoing comes into practice, but rather than do all that, I decided to investigate the source of the problem (being GDS accessing the hard disk too often and do something about it.