New Wii U owners have reported slow or varying performance when using the downloaded menu system.
Day one Wii U players are being treated to a slew of new functionality that adds the much touted online infrastructure to the system, plus browser and eShop access. However there have been a myriad of complaints that switching between simple windows, for example the home screen into settings, causes long loading times of up to ten seconds.
Nintendo have acknowledged the issue and are "exploring ways to enhance features for consumers' overall experience."
The sluggish performance falls in line with various other early-adopter issues, including bricked consoles and sudden loss of power.