Have you used the g-wizard free trial up yet? My machine is a bit beefier, but a good starting point would be to get on the g-wizard free trial, dial in the settings for your machine, turn the tortoise/hare slider right the way down to 1% fine finish, then take 25% off the recommended feed rate and slowly start speeding things up and making slight tweaks to the rpm on the fly in mach3 until you find the sweet spot.
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