Now that you mention it, I have noticed that it takes the levels a while to come up on the P2 depending upon your startup procedure. I find if you power up, turn on phantom, press pause & then add your gain, when you press record the levels come up much faster. If you turn on phantom & add gain & then press record it appears the levels take longer to come up.
This is consistent on the P2 with the LSD2 & the JW Mods.