Those safety devices between teeth are called rakers, and the chain rides on them in the wood. You have to start filing your rakers down when the tooth has been filed down about half way.
There are many different chain designs. Homeowner (safety) chains are designed for limited kickback and generally have double rakers.
Filing the rakers all the way down takes away what the chain rides on and makes the chain very "grabby". It'll cut better, but through the wrong avenue to get there. The aggressive and abrupt bite the teeth now get is hard on the internals of your engine and clutch.
Check out a semi chisel skip tooth chain for super speedy cutting. Full chisel is more aggressive but very fragile and difficult to sharpen. Touch dirt a bit and the chain needs sharpened. If you gotta pry to the saw into the wood with your dogs, your chain is dull and you'll wear out your bar from heat and smoke the clutch from having to pull too hard.
No, I didn't file the rakers down. I filed the safety devices. The yellow highlighted portion in the pic below.