# Help & Support

Signal K has an friendly and helpful community where you can find support and assistance whether you are trouble shooting issues or just have a question.

Join the discussion:

- Discord (New to Signal K Discord? Click here for an invite.)

- GitHub Discussions

## Frequently Asked Questions

Answers to common issues and queries can be found on the Frequently Asked Questions space on GitHub.

Here are some common queries:

- How do I integrate with NMEA2000 (CAN bus).

- Installing & Updating NodeJS

## Troubleshooting

### "Network congestion detected" - What does this mean?

Your device's connection to the Signal K server is slower than the data being sent. This can happen when:

- WiFi signal is weak - try moving closer to your access point
- Network is busy - other devices streaming video, large downloads, etc.
- Slow mobile connection - cellular data may not keep up with high-frequency updates
- Many sensors active - the server is sending a lot of data

What happens?

When your connection can't keep up:

1. The server keeps only the most recent value for each data point
2. You still see current, accurate values - they're just not every single update
3. The system recovers automatically when your connection improves

This is normal and safe. Your navigation data remains accurate - you just might miss seeing some intermediate values (like every single GPS position update during a slow period).

What can I do?

- Move closer to your WiFi access point
- Check if other devices are using a lot of bandwidth
- If on a boat, verify the network connection to your navigation computer
- Consider using a wired Ethernet connection for critical displays
- For remote access (4G, VPN, public internet): enable WebSocket compression in Admin UI → Server → Settings to reduce bandwidth usage