[dwarman]

100 ms max lag is maybe OK for human vision, but you need to be down below 25 msecs between action and accompanying audio, or between action and video and audio. The human ear is much more sensitive to the time domain than the eye.

It's doable but hard. A game can be unplayable until the lags are under control, and only then can they become fun and immersive. Assume the game itself has that potential. But don't release until then.

Beyond this, I have no comment about the game itself.