https://gbatemp.net/threads/wii-u-t...games-for-about-an-hour-in-wiisxr-2-3.620685/It seems like you have to go into a game in order for save states to load. If you load a save state right after loading the iso but before playing the game, the screen will freeze and the Wiiu need to be unplugged
Also I'm noticing I can play a game for maybe an hour before my whole Wiiu shuts down. Maybe a memory issue?
disable the power saving settings on the wiiu settings menu.