I haven't been able to reproduce this with other tempo synced plugins, so it seems like Kontakt (or one of its libraries) is eating a lot of CPU during tempo changes, causing crackles in large templates. It seems like a problem to solve by Native Instruments (or the specific library manufacturer).
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This only happens with Kontakt in VEPro with Cubase. When I connect DP to the same instance of VEPro tempo changes work great. Also when I had the same template with Logic I did not have a problem with tempo changes. It potentially has something to do with the VST implementation? Also when I load the libraries directly in Cubase tempo changes work fine as well. So I am not sure the problem is in Kontakt. If you want I can send you my VEPro Metaframe.
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I just had this issue with a tempo ramping down and a CPU spike and pops/clicks.
I went into each instance of Kontakt 5 and turned off the External tempo sync. FYI, it's in the Master section in BPM.
The problem totally went away.
BTW - I am running Cubase 7 in Windows 7 PC, with Ableton Live 8 and VEPro running as well. All in 64 bit.
Obviously a NI K5 issue. Hope this helps
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Labman - I use Cubase 7.03 on a MacPro (ML 10.8.3). The 3 Altiverb instances are used on auxes inside Cubase. Dlpmusic - looking at theActivity Monitor, there is definitely a surge in processor usage during tempo changes using Kontakt inside VEP with Cubase (as long as Kontakt is tempo-synced to the host). While the Altiverb "fix" alleviates the distorting audio for me, I will do more testing to try to lower that usage (and possible resulting distorting audio). On another note, I did remove the buses inside VEP, and that seemed to have dramatically reduced CPU usage, too. Instead of submixing VI outputs inside VEP, I just route the VI outputs to VEP outputs. It may be worth trying for you. I did contact NI regarding the Cubase/VEP/Kontakt/tempo ramps combo, and they have been of no help whatsoever. Edouard
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Has anyone gotten further with this tempo change clicking in Kontakt 5 issue?
Someone earlier said that it only happens when Kontakt is in VEPro, I have proven this incorrect. It is happening when Kontakt is opened inside Cubase 7 here.
If you score film/TV, this issue is a huge one; I'm constantly trying to figure out how to work around this, but usually it's a huge inconvenience and time waster to solve. And I cannot write any accelerando or rallentandos, for sure.
Thoughts? NI still doesn't quite feel film scoring composers rank high enough to sort out problems specific to them!
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That is my experience as well. Whether it's a jump or a ramp there is an audible pop.
I have not experienced this problem in DP or Logic which both use Audio Units. Also this does not happen with non kontakt instruments. So it appears this is a problem with the VST plugin version of kontakt for tempo synched instances. Is NI aware of this?