Have you tried to increase your audio and/or MIDI buffers in the Behringer?

Do you have another DAW, preferably a 64-bit DAW to eliminate jbridge, where you can copy the MIDI track and EastWest stuff and render them there?
As I have said before jbridge is a excellent program but like all wrappers they do not necessarily work perfectly for all VSTis.

My experience in Sonar with MIDI note drop outs like you are experiencing was corrected by increasing my MIDI buffers. This may or may not be the case with your problems, don't know.

Whenever I get something stuck in the back of my throat, I dislodge it by drinking a beer.
It's called the Heineken Maneuver.

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware