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Sibelius: Strange lag while editing scores with Note Performer and Sound Set(s) combined

Michael Carnes

New Member
Sorry if this is an old chestnut that I've missed. But I've had this turn up on a couple of large scores. If I use Note Performer as my only sound library, editing is quite quick. There's of course the 1 second delay if I cause a note to sound, but that's quite predictable. But if I use any additional soundset (one I create with another library), any sort of edit slows way down. Simply selecting a note or passage brings a couple of seconds of spinning beach ball. Any edit, whether or not I'm doing it on an instrument in my sound set, gets this sort of delay.

I really can't figure out what Sib is doing to bog it down. I'm getting it now with a simple rototom set from VSL. It's way down the soundID tree, so it shouldn't have much of an effect on any sort in internal searches Sib is doing. On a previous project I had several instruments in a Kontakt 7 multi, so the sound search would potentially much larger. The lag isn't any longer, but still ~2 seconds is really an annoying delay when it happens all of the time.

Does anybody experience this and have some idea what's going on?
Thanks,
Michael

Mac M1 Ultra, 128GB
Mac Sonoma 14.3.1 (but this happened on Ventura as well)
All sample libraries on M.2 Thunderbolt connections.
 
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