Here's a short clip of the problem I have with my Alfine 8 hub. The drag seems far too high to me.
I've opened it up and it seems well greased, but something must be amiss. The drag when not peddling sound like it's coming from the gear side rather than the side with the torque arm.
It can't be that bad as standard can it?
https://youtu.be/-K9u-AHHXQA