I'm not sure what needs you have that a single 2080ti won't cover but a console will.. Either way, you're reaching for a resolution that isn't yet feasible. The technology isn't there and SLI is a waste of money for the companies and developers to support, especially with DX12 requiring the developers to code for it. It never worked/scaled right anyway. I guess you're either going to have to put your plan into action, buy a console, or simply accept the facts here. But, I'm guessing you're all talk or maybe a bit crazy if you're going to go buy a console to fix your problem.