well...the reason the chracter are flickering is becuz when ever u start a mode of fighting u'll start off a few seconds invincible so that it wouldn't be cheap if other people could just attack u immediately. the reason it moves slow is becuz NTSD 2.4t4 has more bytes than the other versions, so if u lag very strong i think u should try deleting some huge files on ur pc so that there can be more space. if it still doesn't work just post here again and i'll see wat else i can do about it and if others could also find a way to fix ur problem
ok the flickering stops after a few secs but the slow gameplay never stops the game just runs slow. i even ran a program called game booster which speeds up my pc just incase it was my pc and nothing. restart the computer and still same slow game play.