If you use adaptive clearing (Fusion360) you can decrease your machining times dramatically. I did a test on an aluminum block and found that the parameters below work pretty well. You have to use a little coolant and clear the chips as you got but I was able to clear a 0.55in^3 pocket in 30 minutes while the estimate for the same pocket using conventional milling and the C3D federates was 78 minutes. It’s loud, but it works.
RMP: 9200
DOC: 0.063"
Cut Width: 0.018"
Feedrate: 20in/min
Plunge rate: 4in/min (Helical Spiral)
Video Link: https://www.youtube.com/watch?v=8Uw4cQ1yIsU