Mick like Jed said don't change anything. You had that bar nose buried and it was still falling through that big hardwood.
Definately would have slowed my old 200 to a stall if I tried that.
Stihl introduced that chisel Picco chain about the time they brought out the 201. Thye were hoping the 20% increase in the chains cutting speed over the old Picco would compensate for the equal ammount of power loss the 201 had.
But of course most arbs aren't chainsaw nerds and didn't catch that.