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Since fluid simulations are computationally expensive and allocate large amounts of disk space we recommend Intel® i7 or Xeon systems (or comparable), 16 GB RAM (or more) and a 512 GB hard disk drive/SDD.
Cinema 4D R18
We are aware of the upcoming R18 release of Cinema 4D, but we cannot say anything about compatibility with RealFlow | Cinema 4D at the moment. We have to test our code against the new SDK and this will take some time, but we are very confident to have a working plugin when R18 will be available in September.