I think people experiencing this, myself included, should post about it to Miiverse. Maybe Nintendo will notice and work on a patch. They seem to pay attention to what people post on Miiverse (Of course...emailing them might be just as effective...)
I know you are saying it just takes some adjustment, but its incredibly frustrating to me. I completely stopped playing all of the SMB challenges due to it.
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It lags for me too, and I was watching the GamePad, not my TV screen. I just played the NES game, and there is a noticeable difference in response between the two games. I was able to manage, but it was annoying to someone like me who is a veteran on the NES game.
Obviously the gamepad lags, it's streaming video to the gamepad. The gamepad will always lag behind whats on your TV screen (unless you have a particularly laggy TV). You notice it the most in games that require more precision in their controls, like SMB.
Can also confirm, the game is laggy. Yes, the gamepad has a minimal amount of inherent lag, but as stated before, the VC version of SMB plays pretty much flawlessly. I had to retry about 20 times the first time I did a full SMB level because my jumps weren't nearly as responsive as they should be. Hope Nintendo patches this!
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In the Mario Bros. Arcade Game - yes. SMB - Not really
I thought maybe it was because that game just has poor controls in general. I am not that familiar with this version which seems different from the SMB3 version and the version included with all of the GBA games
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