tracks going quiet

[James]

When I use my VST "Kontakt" I am able to make the track and it work fine for a bit but the the track just goes silent. it stays at around -49 DB and if I max all the volume in the track it only goes up to about -40DB this happens randomly while I'm working on the project

[scook]

Don't have Kontakt but when I read about it and volume issues I wonder if the Zero Controllers When Play Stops setting is a factor.