Why can't I hear all of the drum hits in drum softsynths?

I am having a weird problem that happens with both Jamstix3 and Session Drummer. I will give a Session Drummer example:

I find a midi clip that I like within Session Drummer and I preview it. It works fine. I can hear all of the drums. Then I drag it into the Session Drummer midi track. It looks fine. But when I play it, though I can see from the meter that it's working, I only am hearing one drum hit per measure. Weird. But then if I freeze that track, I can hear all of the drums again.

Does anyone have any idea what is going on? It doesn't happen all the time but does happen fairly regularly. 

I am using Sonar 8.5 with the latest updates/patches.

Thank you!

Thanks Beagle, I'm not sure that it could be that because most of the time it works fine. If it were a mapping issue it would be the same each time, right?
 
It almost seems like a velocity issue but I am not sure how it could happen or how it could be fixed...
 
I have a couple of tracks that I need to take a closer look at.
 
Thanks for the reply.

I never used Session Drummer or Jamsticks, but some drumsynths offer their own internal sequencer where you drag n drop pieces of beats etc.

In this case Sonar midi clock is sent to the plugin to trigger it's internal clock which puts out audio accordingly.

So tempo must match in project and these plugins.

I don't know if it gives you a hint to try something new, but there is some setting that has to do with plugin needing tempo from project or not.

Have a look in plugin manager if anything I've written applies.

Are you running x64 or 32-bit Windows?


Wrappers from 32-bit stuff are known not to support everything.
I would try running through jbridge if that helps. But SD is shipped with Sonar so I would be surpriced.

mine was set to 250 and I've never changed it, so I thought 250 was default.  I don't know, tho.