Do you mean grab as in jumpy and rough cutting, or grab as in bog down in a cut? You mention sometimes bogging, so....
For good cutting, keeping your RPMs up is important.
Bingo. All else being equal, saws need rpm to cut. Lose rpms and the chain won't work. It could be the depth gauges are lower than what you're used to if you do your own chain, and this chain is brand new. They're probably at .030 if they're factory (if memory serves). But if you do your's at .020 when you sharpen, the chain will feel more grabby, and can bog.
Beyond that, skip chain is meant
to keep rpms up and help with chip clearance. Fewer cutters put less load on the chain and saw, and rpms (all else being equal) will stay up. Likewise, fewer teeth in the cut allow more room for chips to "ride" the chain out of the cut, and thus, less clogging. (Again, all else being equal.) But full comp chains can feel smoother, and less jumpy. I run full skip 95% of the time, so I don't even hardly notice it being any rougher or less comfortable.
All that being said, a healthy 660 should manage a 32" through pine all day long; and even with full comp if need be. I'll run mine with a 36" in fir all day long and the saw never slows down.