I realize I posted about this before about a year ago, and I believe Tom said this would be fixed in an upcoming release. There is a definite difference in volume/timbre between a woodwind played legato vs. non-legato (sustain pedal up). Here is a short example I did with piano and English Horn.
Notice how loud the first note of each phrase in the English Horn is compared to the rest. I assure you the velocity and modwheel are nearly constant. This is happening with almost every woodwind instrument.
I have the KP2 update of GPO (a few years old). KP2 version is 2.2.3.003. Granted I have rebuilt my machine and re-installed GPO since my last post, but I remember this same thing happened before and I was also on the latest KP2 update as well.
This is very frustrating. I can't create a soft, smooth woodwind line this way. Thanks for your responses!