So yeah, just to echo what has been said before and elaborate a bit, the reaction time the opponent has is just absurd and basically makes the game unwinnable. 0.03-0.04s would be reasonable if it were simply about clicking anywhere on a signal, but the fact that you have to identify an object somewhere on the playing field, then move your mouse to it and click it-making sure not to overshoot-adds a lot to the reaction time. And that's not even getting into the fact that there's multiple colors of crabs (I have never managed to win a single round, let alone get that far that those show up).
Personally, I would build a new version of the game that maybe errs more on the side of being too lenient than being too strict so people can at least play the game and enjoy the art. For what it's worth, my average time is somewhere between 0.07s and 0.1s, and even when the crab literally spawned under my cursor, I only got a 0.05 and lost to the opponent's 0.04s.
Maybe have a larger range-something like 0.07-0.2s. That could allow for some wins and some losses.