What is Latency? The Hidden Factor in Internet Speed
For activities like online gaming, video calls, and remote work, latency often has a greater impact on your experience than download speed. For streaming large files or downloading games, bandwidth becomes more important.
Latency is the delay between your action and the internet's response. When you click a link, press a key in a game, or start a video call, latency determines how quickly the server responds. It is measured in milliseconds (ms), and lower latency means a faster, more responsive internet experience.
While bandwidth dictates how much data you can download at once, latency dictates how quickly the download starts after you click the button.
What is considered good latency?
Many users wonder what ping is acceptable for their daily tasks. Here is a breakdown:
What Causes High Latency?
Instead of just physical distance, several factors can cause your latency to spike:
- Distance to the server
- Wi-Fi interference
- Network congestion
- Slow or outdated router
- ISP routing inefficiencies
- VPN usage adding encryption overhead
- Background downloads
- Bufferbloat on your local network
- Server overload on the destination website
The Speed of Light Limitation
At a technical level, latency is ultimately bound by the laws of physics. Light takes time to travel through fiber optic cables. If you are in New York and the server is in London, the data must travel under the Atlantic Ocean. No amount of money paid to your ISP can eliminate this physical distance.
Your PC (New York) Ocean Cable Server (London)
[Request] -------------------------------->
<-------------------------------- [Response]
Total time = Latency (Ping)
How to Reduce Latency
If you are experiencing high latency, try the following practical fixes:
- Use an Ethernet connection instead of Wi-Fi.
- Connect to a nearby game or speed test server.
- Restart your router to clear its memory cache.
- Pause large background downloads.
- Upgrade old networking equipment.
- Avoid VPNs when gaming competitively.
- Enable QoS (Quality of Service) if your router supports it.
Related Network Metrics
A comprehensive speed test measures four important metrics that work together:
- Download Speed: How fast you can pull data from the internet.
- Upload Speed: How fast you can push data to the internet.
- Latency (Ping): How quickly the connection responds.
- Jitter: How stable and consistent your latency is over time.