I'm having this problem when playing Yu-Gi-Oh! 5D's World Championship 2011: Over the Nexus, which is that seemingly randomly and with high frequency the game will not respond to a button press, such as directional movement with the D-Pad. It will be responding to input fine for a short time and then all of a sudden not respond for a single press, then continue working for a short time and so on. I find this very jarring. I have tried this both on emulator and my DS and the problem is present on both, so I know it's not a mechanical issue with the DS. Does anyone else have this problem? Is there anything that can be done to fix this or is it just how the game is? Thanks.