I’m more than happy to, my apologies, I’m just quite baffled that you don’t have enough VRAM to handle water with a 24GB card.
Connecting the two without SLI is probably quite challenging to do in an efficient way. If you’re rendering things for MRQ or such you could probably have it treat the other GPU as a render agent, but I honestly don’t know if it’s possible.
Evidently, it is available for UE 5.2!