OK, the input lag seems to improve a bit if you turn down the graphics settings at launch? If I'm not completely imagining things...
Viewing post in The Little Black Bestiary: A Playful Proposition comments
Makes sense.
I mean, lower graphics settings, less lag, better frame rate.
There shouldn't be *any* input lag (I didn't notice any on my dev pc and my weaker testing pc) so the lag you're experiencing is probably some interaction with the engine and your PC. I'm not even sure what those graphics settings affect, to be honest since that's built into Unity and I haven't messed with them on my end.