is it just me or the wii u's gamepad can be stuttery during gameplay? like it has bad wifi, but not really. it happens on my gamepad and its quite annoying.
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is it dusty? if so, try cleaning it off
LEGO Marvel avengers for wii u is a lagfest in gamepad mode
Maybe there is to much distance between the Gamepad and the Wii U console
That happnes with me to