Max Steps is the maxumum number of steps that the environment fog will do. Small values have a chance to terminate the shading before the it's completed. This can be used like a guard for too small steps. However in such case you may render nothing but black which can be confusing. These controls are somewhat difficult since the env fog was implemented as universal volume shader. We may think of another way to setup fluids, like step which is percetage of the cell size (similar to Phoenix FD).
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