yeah, unfortunately its a technical limitation.
(i'm using a wasteful method to draw the map progress, and if i draw them all at once the game will chug)
one option is to let you switch the map that is actively showing progress (maybe based on camera position or something?) but attempts to do that just made the game crash and burn.
but yeah, i'm sure there's something we can do here. just have to think of a clever way to do it.