Not a major problem, just a bug I guess, but every time I fight Ronin, the game lags.  It doesn't matter what arena I'm in, it lags.  I notice Ronin uses a unique treaded drive train design.  Weather this has anything to do with the problem or not, I don't know.  Maybe it's just my computer.  I'm not demanding it be fixed, seeing as I don't mind too much, but an explanation would be nice.  Thanks.