Speedora Blog
What Is Packet Loss and How Does It Affect Video Calls and Gaming?
Packet loss happens when small pieces of data fail to reach their destination. It can make video calls freeze, voices cut out, games jump, remote desktops lag, and websites behave unpredictably. The strange part is that packet loss can happen even when your download speed looks good.
Internet Speed Guide
Written by the Speedora Editorial Team ยท Reviewed for clarity and accuracy - 5 min read
Updated June 2026
What packets are
Internet data moves in small units called packets. A video call, game, website, or file download is broken into many packets, sent across the network, and rebuilt at the other end. When the path is healthy, packets arrive quickly and in order. When the path is unstable, some packets arrive late or never arrive at all.
Lost packets may be resent for some activities, such as file downloads. That can slow the transfer but preserve accuracy. Real-time activities cannot always wait for resends, so packet loss becomes visible as glitches, freezes, and missing audio.
Why packet loss hurts video calls
Video calls need steady delivery. If packets carrying audio or video are lost, the app may fill gaps, reduce quality, freeze the image, or drop words. A small amount of loss can make speech sound robotic. More loss can make people disappear from the call or force the app to reconnect.
Upload packet loss is especially painful because your voice and camera feed must leave your device cleanly. A connection with strong download but weak upload stability can let you hear others while they struggle to hear you.
Packet loss is often more damaging to calls and games than a lower Mbps result.
Why packet loss hurts gaming
Online games need quick, consistent updates between your device and the game server. Packet loss can make your character jump, shots miss, movement rubber-band, or other players appear to teleport. Even if your ping is acceptable, packet loss can make the game feel unfair and unstable.
Fast-paced games are sensitive because timing matters. A lost packet may contain a movement update, action, or server response. By the time the information is resent or corrected, the game moment has already moved on.
Common causes of packet loss
Weak WiFi, interference, overloaded routers, bad cables, faulty modem signals, ISP congestion, saturated uploads, VPN problems, and distant servers can all cause packet loss. In homes, WiFi and router overload are common causes. In wider networks, congestion and poor routing are common causes.
Packet loss can also appear when too many devices compete for the connection. Cloud backups, camera uploads, downloads, and streaming can fill queues and cause real-time packets to be dropped or delayed.
How to test for packet loss
Start with a Speedora test and note ping and jitter alongside speed. Then compare WiFi with Ethernet. If packet-like symptoms disappear on Ethernet, the problem is likely WiFi coverage or interference. If they remain on Ethernet, check the router, modem, cables, or ISP connection.
Run tests when the problem happens, not only when the network is quiet. Also test while uploads are active. If calls break when someone uploads files or cameras sync to the cloud, upload saturation may be the real cause.
How to reduce packet loss
Use Ethernet for gaming, video calls, and work calls. Move closer to the router if using WiFi. Switch to 5 GHz when nearby and 2.4 GHz only when range matters more than speed. Restart the router, update firmware, replace damaged cables, and remove unknown devices from the network.
Pause large uploads before calls and games. If your router supports quality-of-service, prioritize real-time traffic. If packet loss continues on Ethernet with only one device connected, contact your ISP and provide times, tests, and symptoms.
How packet loss feels compared with low speed
Low speed usually feels like waiting. Downloads take longer, video quality drops, and pages load more slowly. Packet loss feels more broken. Audio disappears for a moment, video freezes, games snap backward, and remote desktops stop responding even though the connection may recover seconds later.
This difference matters when troubleshooting. If everything is merely slow, bandwidth may be limited. If things are cutting out, packet loss, jitter, or WiFi instability may be involved. A bigger plan may not fix that if the real cause is a weak wireless link, bad cable, overloaded router, or unstable ISP signal.
For important calls or games, reduce variables. Use Ethernet, close downloads, stop cloud backups, and test again. If the problem disappears, your connection was being disrupted locally. If it remains with one wired device and no background traffic, the evidence is stronger for a modem, line, or ISP route problem.
Keep notes on when packet loss symptoms happen. If calls break only when cameras upload or backups run, the fix may be scheduling and traffic priority. If games lag only on WiFi, the fix may be placement or Ethernet. If symptoms appear on a wired device with no other traffic, that is the moment to involve the ISP with clear evidence.
Final answer
Packet loss means the connection is not delivering data reliably. For files, that may only slow things down. For video calls and games, it can break the experience immediately. The fix is to separate WiFi from ISP issues, reduce congestion, use Ethernet for important real-time devices, and collect clear evidence if the problem continues beyond your home network.
When you want a clean baseline, run a Speedora speed test and compare download speed, upload speed, ping, and jitter in the same place where the problem happens.
Back to Speedora Blog