when you have a problem you need to debug the problem asking questions
The main problems with VSL are due to disk I/O, not enought memory or cpu too slow
If you do not want to answer, that is your problem
Bye
MacBook Pro 2019 16" + 2 x Odisseey G9 49" Big Sur
MacPro 2010 12 core 2.93 ghz 64 GB Mac OS X 10.11 2722 Rocket Raid Sata III card with 8 x ssd
VSL lib on a Raid 0 of 4 x 256 GB ssd Sata III - Raid 0 of 4 x 64 GB for other libs
System on a 1 TB ssd
Audio Motu PCI system 84 ins / 64 outs
Kbd : P80 Yamaha, S88 and S25 Komplete Kontrol, DX7
I-Controls Pro, 2xMidi expression pedals
Synth : many....
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Macbook pro Retina 2.7 ghz 16 GB
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Mac Mini server 10.10 (server, Itunes, WEB, and Backup )
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Logic X , Dorico, Band In A Box, ORB Composer
VSL : MIR PRO, Appassionata Strings I, Solo strings , Wind and Brass Complete, Dimension Brass, Big Band Orchestra series
Kontakt, Omnisphere, QLSO, QLSC, CS 80, Arturia V5, Maximo, Realivox Blue. CS 80 V3, The Orchestra 2, Art Conductor 5, Genesis Children Choir, Lunaris, Lacrimosa
Final Cut pro
Camera full HD