registered to thank original poster. it's so refreshing to find that someone else out there is bothered by input lag enough to actually do something about it.
unfortunately, i'm still experiencing a noticeable amount of input lag with vsync on in your release of nestopia, but at least you're on the right track.
i don't understand why vsync and input lag have to be related in so many different programs. it seems like very few people in the gaming industry have any interest whatsoever in rectifying the problem.