Does Sonar seem generally sluggish when you hear the stuttering? When you draw controller data do you get as many points as you would expect? How much memory are you using? Do you get this problem even with very simple (small memory) VSL patches? Or only when you are maxing out your system? Does it happen at the beginning of sessions or after using Sonar for a while?

Thanks,
Jay

Hi JBacal,

Sonar is not sluggish at all when the stutttering occurs, or just in general. It performs fine and with no issues.

I have not noticed any issues with drawing controller data, though I did
not specifically look into that.

I get the stutter even if only 1 VSL VI is initiated with a single patched loaded
and nothing else loaded in Sonar. I get the stutter even when the VSL VI is the only VSTi loaded. So, its not a system, CPU, or RAM overload issue.

It happens only when a VSL VI midi track is playing and I hit stop.
When I hit stop the stutter occurs. If the VSL track(s) have come to an end but there is matierial on other non-VSL tracks and I let them play and then hit stop then there is no stutter.

I have experienced this with the VI's interface open and closed.

If you think its video card I can pull one off of an older computer and see if there is more or less stutter.

BTW, the Sonar 6.2 upgrade did not make any difference in the stutter issue.

David

I've seen this stutter on stop when using the ASIO drivers in Sonar, but never with WDM. Maybe want to check your driver setting and see if that helps.

Steven

Hi sgentry,

Thanks for the input.

I was under the impression that WDM was not the best driver to use
in Sonar so I have been using the ASIO driver.

I'll try the WDM tonight and report on that.

I think that WDM has more latency, if so I will deal with the
stutter and not sacrifice latency.

If it is a WDM - ASIO thing why does it only happen with the VSL VI?

David

@David Mikautadze said:

Hi JBacal,

Sonar is not sluggish at all when the stutttering occurs, or just in general. It performs fine and with no issues.

I have not noticed any issues with drawing controller data, though I did
not specifically look into that.

I get the stutter even if only 1 VSL VI is initiated with a single patched loaded
and nothing else loaded in Sonar. I get the stutter even when the VSL VI is the only VSTi loaded. So, its not a system, CPU, or RAM overload issue.

It happens only when a VSL VI midi track is playing and I hit stop.
When I hit stop the stutter occurs. If the VSL track(s) have come to an end but there is matierial on other non-VSL tracks and I let them play and then hit stop then there is no stutter.

I have experienced this with the VI's interface open and closed.

If you think its video card I can pull one off of an older computer and see if there is more or less stutter.

BTW, the Sonar 6.2 upgrade did not make any difference in the stutter issue.

David

Same experiences here - does'nt make any difference if its one or more instances, only more instances seems to make more noise.
I'm positive that this is not a performance issue.

Ok, I tried the WDM drivers and the stutter is gone!

There is now a single click/pop noise on Stop but the stutter
is no longer present and the single click/pop is more bearable.

Surprisingly, I have not experienced any increase in
latency or any negative issues from the use of WDM drivers, as of yet.

Thanks to sgentry for the tip!!!

Sapkiller, can you try WDM drivers as well to confirm that ASIO is the culprit?

Thanks,
David

David, glad to hear that may have fixed your stutter problem.

Steven

Hi david
I'll try it out to night [H]

Jep - changing the drivers to WDM-KS eliminates the stutter problem.

So it seems to be a Sonar - VSL VI - Asio combination problem

Hello all,

I experience the same terrible noise on stop in both a Cubase and a Reaper environment on a brand new machine with an Intel Quadcore processor and 4 Gb of RAM. The graphics processor is a Nvidia Geforce 8600 GT. Unfortunately I have to stick with my ASIO driver. And again, this only happens with the VSL player active. Take it away and the system stops quietly.

Any ideas would be appreciated.


Thomas