Shared configuration
The GM chooses the scene background once; scene metadata carries it to current clients and late joiners.
Owlbear Rodeo extension
A battle mat that keeps going.
Choose one map image and repeat it beneath the whole scene. The pattern stays fixed in world space while each device controls its own bounded rendering cost.
Predictable performance
The scene owns the image. Each device owns the cost.
Local rendering
Unselectable local image tiles sit beneath maps and never inflate the synchronized scene object count.
Strictly bounded
Off through Extreme presets cap the pool. Panning recycles it, and zooming out never creates more tiles.