for a performance at an immersive room, is it practical to spread a particle system rendering across multiple gpus ? the place might use one machine with 2 or 3 rtx cards.
Would be a nice if you check gpu load with something like GPUZ, in betta as I remember, it used only one card for rendering and rest just received image with minor gpu load
general notes on multiple GPUs: Graphics Cards | vvvv gamma documentation
whether SLI (or however they call it today) would help in your scenario is something you’d have to test and see.