Ive only machined particle board and mdf on my router so far and quickly discovered the mdf is really bogging my router down. Once the router heats up I'm only able to run at 30ipm .25 deep cut with a new carbide 1/4 upspiral bit. It's a DeWalt dw618 router. The thing ain't happy any faster than this it starts sounding very stressed and sparking inside a lot, dimming the lights even as it pulls more current. On pocketing I can run much faster after the first pass, and particle board was much better too. I'm assuming it would do better on plywood too but the mdf just seems to gum up the kerf instead of clearing out efficiently. I thought the 1/4 upspiral bit is the best here but I don't know is there anything better? I do plan on getting a more powerful spindle in the future but I expected a little more out of this..