Heightfield fluid sims are much less compute intensive. https://dl.acm.org/doi/10.1145/97880.97884 https://dl.acm.org/doi/10.1145/97880.97884 You will trade aw

Heightfield fluid sims are much less compute intensive. https://dl.acm.org/doi/10.1145/97880.97884 https://dl.acm.org/doi/10.1145/97880.97884 You will trade away details, so this depends entirely on what you need for visuals and interactivity; heightfield fluids won’t give you splashes or bubbles or swirling. You could try to mix a heightfield sim on most of the bottom with a thinner SPH layer on top, but that might be treading into research territory.