Exactly... client side limitation... as in PS2 limitations. You only have...what was it? 32 MB of RAM to use on the PS2 for EVERYTHING NEEDED IN THE GAME AT THAT PARTICULAR POINT IN TIME. Just look at the difference in assets that may be required when standing at the AH vs. being out in the field and pulling up your inventory screen during battle in something like, lets say Campaign or Besieged. There is a lot more going on behind the scenes with your client between those different points in time, and thus different levels of resources are being consumed.