mine is the same way. it's the indexer, which is a bin file I believe. it doesn't index icons or game names or anything like that. those can be freely changed without reinstallation or loading the game in question. the indexer just knows of the existence of the game. it relies on what's called "common files." the ps3 does it too, but more information is recorded on the ps3 it seems, so it's faster. the indexer there is about 10-12MBs for 5,000 installs, so do the math. I don't know what it is for the wii u. it's not necessarily the speed of the system, just the fact that not enough information is recorded, so it's reading over the common files of the hdd. this is unlike the 360, which doesn't use an indexer. to read over my 3,400 indies in dashlaunch takes about three to five minutes, since it has to read over the entire hard drive.