So I recently got a shmup game on steam called Steredenn, it's cool and all but it has the mother of all input lag. I attempted to remedy this by going under my videocard setting and force-off for vertical sync, but that didn't help at all. Any shmup vets have general tips on how to solve input lag woes? The delay after pushing something is bad enough, but what really hurts is how you can't move tiny amounts because even after letting go of a key I tapped, my ship moves for a good half second, making precision movement impossible =(.
Also, if there is no solution software-wise for this, what exactly causes input lag to occur for some people and not others? Is it a keyboard compatibility thing? or is it a motherboard/CPU thing? Or is it really just a random thing that happens when everything is combined?