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Learn how to use Photon Engine interest groups in Unity PUN2 to filter network messages, reducing bandwidth by ensuring only subscribed players receive specific events.
Learn how Photon Realtime Interest Groups filter network traffic by subscribing clients to byte-coded channels, cutting bandwidth in scalable multiplayer games, with a C# example.
Goal: Determine whether developers should manually clean up unused interest groups in Photon Realtime or rely on custom properties for event filtering. Constraints: Interest group subscriptions are not persisted across reconnections, the server supports a maximum of 255 groups per client, and there is no built‑in mechanism to automatically remove unused grou
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