Okay, thanks for the info. I might give it a shot. Yeah, they won't be shifting around often, just when the players want to move to the next unloaded room. Doing a kind of Rogue-like dungeon where each room is decided by rolls. I save and remove older rooms and their tokens, while centering newer ones. So that seems to keep the page size small and the lag to a minimum. My one hiccup (which I was referring to in the OP) is the animated lights. I'd be fine with a static token that the API could create except they are more than just decorative and play a role in the overall narrative. So I'm okay moving them around since most rooms can just reuse the same ones, maybe randomized a bit for variety.