Hi there I really liked this video. It gave me the motivation to solve it's issues. I'm a unity 3d developer working on a design for creating video walls like this. But with high performance.
I think 1 of the problems with the lag involved with 16k while gaming is that the game is trying to display at 16k which uses a lot of video memory.
And that's one of things I'm planning to solve.
So far I tested my solution with a 4x4 setup using 4k gaming monitors and the lag is no different than watching an 8k video on YouTube while gaming. Which is very minimal on a 1080ti. I can't wait to get more done with my software
I need to test more too for sure!