Network Latency
This article covers the impact of network latency on the use of ClassVR devices.
Applies to: CVR-155-A / CVR-255 / CVR-255-64 / CVR-355-128 (Xplorer) / CVR-655-128 (Xcelerate)
Network latency troubleshooting
If you’re experiencing slowness or buffering when using ClassVR headsets or uploading content, the issue is likely related to your network or internet connection. Similar problems may also affect other devices on the same network.
Steps to try:
- Reduce content load – Try uploading a smaller amount of content or sending it to fewer devices at once.
- Check network stability – Ensure that both your network and internet connections are stable and reasonably fast. Make sure the Wi-Fi signal is strong and not subject to interference.
- Avoid peak traffic – Heavy network use, such as video streaming, can cause slowdowns. Reduce bandwidth-intensive activity during lessons.
- Confirm headset syncing – Some subscribed content may take longer to download. In the Administration Portal, go to:
Settings → Administration Portal → Devices
Manage Devices – portal.classvr.com - Bypass bottlenecks – If many devices share the same network path (e.g., through firewalls, proxy servers, or switches), try setting up a direct connection.
- Review hardware – Outdated routers, access points, or switches can contribute to latency.
- Limit ClassView usage – ClassView streams in real time while also delivering content, which may slow performance.
- Run network diagnostics – Check the Network Diagnostic tool:
Network Diagnostic – portal.classvr.com
Further troubleshooting
- Test another network – Try the headsets on a different Wi-Fi network. (Your computer must also be on the same network to upload content.)
- Check Wi-Fi strength – Use the headset’s connectivity indicator to ensure a strong signal.
- Test single-device performance – Turn off all but one headset and upload/run content to see if speed improves.
- Reduce file size – Large or numerous files take longer to upload and consume more bandwidth.
- Stay close to access points – Being far from the router/AP can cause latency due to signal loss.
- Check Bluetooth status – Bluetooth is normally disabled; if enabled, it may cause wireless interference.
Important Notes on Network Performance
Identifying network latency can be challenging, as the cause might be internal (Wi-Fi, switches, firewall rules) or external (ISP).
ClassVR devices work best when:
Sufficient bandwidth is available for the number of devices in use. See: ClassVR Network Requirements
Latency between teacher’s computer and headsets is under 100 ms.