I also find those cheap forstner sets are often not sharpened very good. Buy some decent quality forstner drill bits. I never even use the larger ones that come with the sets so a few smaller single ones of good quaility are a better bet IMO. I also find that the soft woods, white and red cedar especially, even done with forstner bits will chip the wood along the dia. of the hole. I don't have any problem with ayc, tighter grain, or good tight grain pine and really never a problem with hard woods like maple and such. The open grained woods are toughter to deal with so I would expect some tears. If I have the time I usually use a carbide end mill at high rpm which eliminates all the problems
, but usually just use a hand drill. Just my 2 cents, which ain't worth much.