Are you having problems in every project?
No, so far only this one project.  I've copied it to another project and tried it in X1 and it still happens.  I've uninstalled 8.5X so I can't try it there.
1. What Synth?
The picture is True Pianos, but happens in Dim Pro as well.  I don't seem to have the issue with Superior Drummer if that means anything.
2. Have you looked at the midi data and checked for duplicate notes, or control events?
Yes-  Since it plays fine with effects bypassed and synths unfrozen I'm thinking it's not a straightforward MIDI issue like a control event.  Can't see anything in the event list either.
3. Have you checked the Event List to see if there is something there that could cause a problem such as a program change or channel event?
Good suggestion, don't see anything.
4. Are you using Simple Instrument Tracks?
No, syths are inserted with the Insert Softsynth command, not simple instrument tracks.
5. Is there another track in the project routed to the synth?
No.
6. Have you checked to see if perhaps there are automation events that might be hidden?
Can't see anything.  Dropouts seem to be random when not frozen, sometimes they happen and sometimes not.  Seems to depend on where I start to play the project as well.  If I hear a dropout and move the now time to just before where I heard it it often will not drop out on playing a second time. 
7. Are you using any DEMO plugins?
No, but good suggestion.  All standard plugs I've been using for a long time. 
8. Have you inserted a New instance of the Synth on a New Track and copied your midi data to it after doing the above?
Yes, tried this a couple of times.
9. Use PRV and mute all notes from Middle C and upward.  Do all the remaining notes play? If everything checks out unmute them and then mute all notes below middle C and see if they play correctly.
I'll give this a try when I get a chance.
 
This is something that should be able to be tracked down.
You already know it likely has nothing to do with performance since it is also evident in a track freeze. 
 
 
  Thanks for the help, will continue to try to track this down. 
 
John

John


If you are still trying to use the FX transpose on that track try using the transpose widget in the track inspector instead. 

kevo

CoteRotie

Tom Riggs


I set my midi buffers to 512 and that usually fixes any midi dropout issues.

I can't seem to increase my MIDI buffers beyond 128, is there some setting in AUD.INI or something that allows more buffers?  According to Noel it shouldn't be necessary with the update, but I'd give it a try if I could figure out how to do it.
 
Thanks,
 
John

There appears to be some misunderstanding or miscommunication here.
 
Under Preferences->MIDI->Playback and Record->Record
 
There is an option that can be ticked for "System Exclusive".  There is the option if this is ticked to set "Number of Buffers".  The default value is 64 and the maximum value is 128.  I have never found a need to change this value.
 
 
Under Preferences->MIDI->Playback and Record->Playback
 
There is an option "Prepare Using 000000 Millisecond Buffers"
This is the value you need to adjust.
 
In Sonar X2 I had to adjust this value to 512 in order for it to play even simple projects.  The projects played fine in other versions of Sonar but not Sonar X2. On my laptop, I had to set this value at 700.
 
If this value it too small or too high it will cause problems.
Try 256. If that doesn't work try 512.
 
I had the same problems that you are experiencing when I first installed Sonar X2.  Unfortunatley that was back in September and I cannot remember what else I did to the configuration.