Forum:Does Action Replay damage games?

Okay, so I have "Yu-Gi-Oh! 5D's World Championship 2011: Over the Nexus" and was convinced by my cousins to use Action Replay to unlock all the cards in the game. But, I didn't like the fact that I didn't earn them myself, so I started a New Game. The thing is, however, that I hear Action Replay can damage your game. Should I be worried that using Action Replay before might've caused some defects in the game? Or, did the game clear any alterations made by Action Replay when I started a New Game? I have noticed that the game has a really slow AI. Could that be a defect made by AR, or is that normal? Please help. Xerdek! (talk • contribs) 20:57, March 22, 2013 (UTC)