It doesn't bog at all until I get deep into the center of a hard stump with lots of cutter engagement, and I'm only running it at 2000 engine rpm which translates to 657 at the wheel for 4,125sfm.
This was a bad stump candidate for the video since there was so little solid wood left. I'll do another one on a fresh oak.
It doesn't bounce at all. It'll vibrate when you get into the hard stuff, but the chatter is minimal.