Diagnosis Guide
Why is my jitter high?
High jitter usually means your network timing is unstable. The reason might be inside your home, inside your mobile connection, or further upstream with your ISP or routing path.
Weak Wi-Fi
Distance, walls, and interference can make latency inconsistent.
Congestion
Busy networks and background traffic often create jitter spikes.
Routing
Some servers or regions may have less stable network paths than others.
Hardware
An overloaded router or modem can create unstable response times.
How to identify the likely cause
Only bad in one room
This usually points to Wi-Fi coverage or interference.
Bad at busy times
This often suggests congestion on your local network or ISP side.
Only bad on one server or game
This may indicate routing or server-specific instability.
Bad on every device
The problem is more likely at the router, modem, or ISP level.
Use data to narrow it down
LizSpeedTest helps you compare repeated jitter tests, nearby versus far-away locations, and multiple metrics such as ping and packet loss so you can narrow down the cause before changing equipment or providers.