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Connection & speed

Reduce lag in browser NES multiplayer

Responsiveness depends on both devices and the network route. Direct WebRTC and server relay can take different paths.

Joybito team

What to do

  1. Stop large downloads on both networks.
  2. Keep both game tabs visible.
  3. Compare stronger Wi-Fi or Ethernet using the same game and friend.
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Technical references

Related guides

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Wi-Fi or Ethernet for NES online?

Stable packet delivery matters more than headline download speed. Busy Wi-Fi can cause varying latency despite a fast speed test.

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P2P sends game messages directly between browsers. Relay routes them through the room server when direct traffic fails or stalls.

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Troubleshoot NES multiplayer with a VPN

A VPN changes routes and may affect browser connections. It can help or hurt a specific connection; speed improvements are not guaranteed.

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Room connects but gameplay stalls

Room membership uses WebSocket; direct gameplay can use WebRTC. A managed network may allow one connection type and restrict another.

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Why does the NES site need HTTPS?

Gamepad access and Web Crypto depend on secure-context rules. Public deployment should use HTTPS and secure WebSocket connections.

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Check whether stutter comes from your device

Each device emulates its own console. Power saving and competing applications can interrupt frames despite a fast connection.