Cfm definitely does not reduce the residency time, but it does mean it’ll pull vac faster, and heavier vac will reduce residency time but the way this machine is designed, it’s not a significant difference and the bio comes out soaking fucking wet, you might have better luck doing the “drying” process about 30 times per go, after recirculating like 10 times. No joke.
Again the tip the guy shoulda gave you was, send it back to the pits of hell