Good evening! I recently saw a video by Sample explaining the inner workings of a TAS run of KSSU and I have been interested in speedrunning the game. However, I only have the US copy of KSSU and was wondering if it would hold me back from getting viable times? From what I can gather, the Korean and Japanese versions of the games are better because the computer virus boss text scrolls by faster, and wingzips are only possible on the Japanese version of the game. Thanks, and have a great day!

It's only like 7 seconds or something you're gonna lose playing on English, I wouldn't commit to buying another cart unless you know you wanna grind it

Korean cart is hard to obtain, I had to use KoreanBuddy to get it through a Korean website and it set me back $60. It has fastest text scrolling in some games and has some oddities for 100% that make it faster.

Japanese cart is the only one with zipping but the trick isn't viable for RTA, and for some reason power switching on MWW doesn't have as long of a buffer as it does on Korean

I would buy Japanese cartridge since it is cheap on eBay