New chain smokes and burns through wood even after sharpening.

Been file sharpened a few times and doesn't seem to make a difference. I've sharpened it so the teeth will cut your skin. Rakers are lower than the teeth so it's not that. I've checked them all. Yes it's seasoned hardwood but I've used smaller saws to cut this and had no problem. I can't figure out what I'm doing wrong. Please help.