View Issue Details
|0006524: ZynAddSubFX LV2 weird stutering issues
|I've noticed a very strange behaviour of ZynAddSubFX in Ardour 4.1.
Notes played and internal parameter changes seem to be processed with a slew limiter and a sample-and-hold unit generating a slow changing sound with stutter and heavy note quantization.
I've captured a video:
|I'm using KX Studio. I used Zyn a few months ago with Ardour and such stuff didn't happen.
|No tags attached.
with DSP load > 90%.. (indicator top-right) things like this are to be expected. those are x-runs.
There are probably some other heavy plugins in your session or CPU heavy jack applications running.
Increasing the jack buffersize may also help.
For everything over 80% DSP load you'll be out of luck for any reliable audio/midi performance (note that jack display the average not the max).
I don't think that's the cause, becasue in the same session I'be been playing MDA Piano with an external USB MIDI keyboard for hours without hearing a single dropout.
There are no audible clicks, as there are with xruns. I know that recordings not always capture xruns as they sound out of the soundcard, but in this case, the sound captured in the video is verbatim. I listened to it after uploading.