User blog:AKFrost/Little Known Fact

Almost every action in the game has the server send you your full inventory in a JSON object.

Each daemon is represented by about 1KB of Data.

So if you have 500 daemons, a simple act such as refreshing your battle list or resetting/reordering your teams can easily consume half a MB of data, and take several seconds to transfer/render.

Therefore, having a ton of daemons can actually significantly slow down your game and chew through your bandwidth like a hot knife through butter.