Welcome, Cruz! Echoing the posts by geo and mickeg, gears 1 through 7 are much noisier than 8 - 14 (although the freewheel in the upper gears is noisier, and the freewheel in the lower is quieter.)
The noise of the hub does lessen with kilometers and age, and starts to lessen after the first oil change. Mine now has about 14,000 kms on it, and in gears 8 - 14 it is very quiet -- in #11, it seems silent. Gears 1 - 7 are noisier; gear 4 is the quietest in the lower range.
As for feeling friction, as you say you do: I can't feel any friction from the hub, even in the lower gears. My shoes have very stiff soles, and I keep my chain relaxed, rather than tight -- maybe those two things absorb any friction which I might otherwise feel through the pedals?
Not sure where you are, but: Could you find an "experienced Rohloff rider" to use yours, and offer his/her experience? Or, could you find someone whose hub is well broken in, and try riding that?
Hope that's helpful.