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Compress Particles | prtcompress – Enables compression of the simulated particle systems , which optimizes system performance when the simulation involves a high particle count (50M or more). In such cases, the cache files can reach up to 1GB each unless the particle system is compressedwhen they are written to AUR cache files. VDB cache files exported from Phoenix do not support particle compression. Simulations with very high particle counts, such as 50 million or more, will produce large caches, so particle compression will help reduce the cache sizes significantly. If you are writing or reading the cache files over the network or to a disk drive, this could significantly speed up simulation and rendering. However, if you are writing the simulation caches to an SSD drive or other fast storage, and you can afford to have large cache files, then disabling the compression could actually speed up the simulation.

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