FLStudio it doesn't. The volume normalization was immediately noticeable and I was able to get ASIO4ALL and FLStudio ASIO to audibly sound the same only after I disabled the effects in Windows.
Is this a bug or on purpose ...
FL is no longer producing any sound, while the timer and track indicator still moves (in hybrid Playback tracking mode).
I can only re-use the FLStudio asio driver after a reboot of my pc. Selecting another ASIO driver, like ...