As an aside, aside, aside, I can play Zoids on a 64Gb Pc from 2016 with a 32768 prefetch/preload in the Spitfire settings without it crackling, and there are other people using the sound set happily on more limited equipment for their own scores.
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There's a demo file called "Zoids.sib" in the Documents/Sibelius Services/BBC Symphony Orchestra Core directory, along with other documents. The other best thing to do is to start using it in your own compositions and see how that goes. An idea for an optimisation that might help from my end did occur to me though, so I will be doing that next week.