Nice you're getting there now. For that bump on the Y that's your lead in for your contour, change it so that it sweeps into the cut instead of just moving directly into position.

It can drill fine anywhere up to 8mm I find. 6mm and below it goes through like butter nice and quiet and makes nice long stringy chips. If it's a size you use often it's worth getting carbide drills as you can spin them faster, get them under a bit of torque and also don't need to spot drill first with them either so it saves a bit of time.