When playing super mario bros 3 ntsc usa version, there is a very noticeable lag when mario is at full speed flying past the three green Koopa Paratroopa in the first level:
This occurs on nestopia and mesen, but only with the usa version and not the european (japan version not tested) and on both windows and linux. Can anyone confirm if this issue also exists on real us nes hardware? If this is not the case, what hardware specs are needed to avoid the lag?