Chazz, Just something I found out to speed things up. The first flute-the bit is cutting along the entire cutter edge, so you want to go your regular pass depth and just cut the one. Then grab them all, and because subsequent passes are only cutting on one edge(use small offsets and almost no sanding-Ballnoses work nice too) and only taking small bites you can usually set pass depth to full depth and increase feed as well. Play with it. Try circular array with a .5BN with ramping at start and end and you can get some neat scalloped effects.
scott P.
2013 Desktop/spindle/VCP 11.5**
Maine