Nah I highly doubt it's due to loading skins, npcs can have skins and I've never noticed any sort of issue with it. Additionally while the cobra engine is perhaps getting a little old, it's not ancient in that it would somehow perform worse than the amount of skins we see in other multiplayer games.I think it's the OPEN game that's ruining it. You can't have a very large number of loaded skins for each commander in an instance.