Back then GNiE still had a functioning forum and I already guessed that the disc streaming speed was a factor for the slow overworld exploration; largely based on similar open - world games from the Playstation 2 also running into streaming limitations (Jak II). (nintendotoday.com)
After all, X and Y were seen by many people by rather disappointing, yet they nailed the battle system and overworld exploration just fine. (gamingreinvented.com)
The game takes a lot of inspiration from Ultima, although like in Poibos the hero is merely a rectangle on a tiny window view of the map during overworld exploration. (hardcoregaming101.net)