How to Reduce Jitter on Your Internet Connection
The most effective ways to reduce jitter are switching to Ethernet, upgrading your router, and reducing network congestion. Jitter under 10 ms is excellent; over 30 ms causes noticeable problems on calls and in games.
Jitter is the variation in your network's round-trip time from one packet to the next. While high ping adds a constant delay, jitter adds unpredictable, inconsistent delay — which is often worse. A video call with 30 ms stable ping feels smooth. A call with 10 ms average ping but 50 ms jitter feels choppy and unreliable.
1. Use a Wired Ethernet Connection
Wi-Fi is the leading source of jitter in home networks. Radio frequencies are shared, and interference from microwaves, neighboring networks, and walls causes the signal quality to fluctuate. Each fluctuation shows up as jitter. Switching from Wi-Fi to Ethernet eliminates this variability entirely. For video calls and gaming, this one change typically reduces jitter by 70–90%.
2. Upgrade Your Router
An older or cheaper router may struggle to process traffic fast enough when many devices are active simultaneously. Under load, it queues packets instead of forwarding them immediately, introducing jitter. A modern Wi-Fi 6 router with a faster processor handles more concurrent connections without queuing delay. If your router is more than four years old, upgrading often noticeably improves jitter.
3. Reduce Network Congestion
When multiple devices are competing for bandwidth simultaneously, packets queue at your router. This queuing is a direct source of jitter. Pausing large downloads, cloud backups, and streaming on other devices during video calls or gaming sessions reduces congestion and stabilizes your ping. Many routers offer QoS (Quality of Service) settings that automatically prioritize real-time traffic.
4. Avoid Peak Hours
Your ISP's shared infrastructure can become congested during peak evening hours, causing jitter that originates outside your home network. If your jitter is consistently worse between 7 PM and 10 PM, ISP congestion is likely the cause. Testing during off-peak hours confirms this. Some ISPs throttle or deprioritize traffic types that could be addressed by switching providers.
5. Improve Router Placement
A weak Wi-Fi signal produces more jitter because the radio has to retransmit more packets. Moving your router closer to devices you use for video calls or gaming, reducing obstacles between them, and elevating the router from the floor all improve signal quality and reduce wireless jitter. Our router placement guide covers the key rules.
Jitter Targets at a Glance
| Jitter Level | Rating | Effect |
|---|---|---|
| Under 5 ms | Excellent | No perceptible effect on any application |
| 5–10 ms | Good | Smooth for all real-time uses |
| 10–20 ms | Acceptable | Minor inconsistency, usually unnoticed |
| 20–50 ms | Noticeable | Choppy audio, brief lag spikes in games |
| Over 50 ms | Poor | Significant call disruption, game lag |
How to Measure Your Jitter
Run a speed test using the NDT7 protocol — our test reports jitter alongside download speed, upload speed, and ping. Run it several times at different times of day to get a representative sample. High jitter during evenings but not mornings points to ISP congestion. Consistently high jitter regardless of time points to your home equipment.
Frequently Asked Questions
Ping is the average round-trip time. Jitter is how much that time varies from packet to packet. You can have low average ping but high jitter, which is common on congested or wireless connections. Both matter for real-time applications, but jitter is often more disruptive because it is unpredictable.
Yes. Fiber connections generally have lower and more consistent latency than DSL or cable because the signal does not degrade over distance and the infrastructure has more capacity per user. Fiber is the best connection type for minimizing both ping and jitter.
Streaming video buffers ahead, which absorbs a lot of jitter. Netflix, YouTube, and similar services rarely show problems due to jitter unless it is extreme. Real-time applications with no buffer — video calls, gaming, live streams — are far more sensitive to jitter.
Sources
- ITU-T G.114: One-way Transmission Time Standard
- Cisco: Understanding Jitter in Packet Voice Networks
- Wi-Fi Alliance: Causes of Wireless Latency