Brewed the brut IPA tonight. I fly sparge and the run off was super quick. I mean a fly sparge completed in 25 mins. I even had my ball valve dialed back as far as I could. My efficiency was dead on and I hit my targeted OG.
The ONLY thing I could think of is the liquification of the mash broke down all the sugars except the husk allowing for an excellent filter bed and easy run off.