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How to fix packet loss: complete guide

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Outlines what packet loss is and what causes it, how to fix packet loss, methods for testing packet loss, and instructions to fix it for Fortnite and Xbox One.

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How to fix packet loss: What is packet loss
What causes packet loss?
How to fix packet loss
How to fix packet loss Fortnite
How to fix packet loss Xbox One

Activities like gaming and voice chat usually don’t require a lot of bandwidth, but they do require quick and reliable responses. In addition, these programs usually don’t send information again if it doesn’t get there. So if packets are lost in transit , they are gone forever, which can also have a significant impact.

How to fix packet loss: What is packet loss

You may be wondering, “What is packet loss?” or “Why should I care?” Well, packet loss is simply when a packet cannot be delivered. It’s sent, maybe even received by the server, but it’s lost somewhere. It’s like sending a message to a server, but the server never receives it, or the other way around (it sends it and doesn’t reach you). Regardless of the direction, this is bad.

With typical TCP-based web browsing, the sender finds that their message was not delivered properly and sends it again until it gets right through or gives up. However, this results in significant slowdowns as he has to wait long enough to give up delivery before starting the entire delivery process again.

UDP and similar unreliable protocols typically do not attempt to redeliver messages and they are lost forever. On a voice call, this can mean that some words are simply never sent. In an online game, this usually means that something you tell the game never happens. Your movement will be undone or your bullets will never be registered. This can, understandably, be very frustrating, and any significant amount should be attempted to be fixed. To do this, however, one must be able to test to see if it is there.

What causes packet loss?

The causes of packet loss are often the same as the causes of network problems. The core problem is often network congestion. Too many users are trying to use a network connection at the same time, and the network routers cannot process what to do with all packets fast enough that they have to drop some packets. 


You should check how much of your bandwidth is being used (either through your router or with Resource Monitor or Task Manager on Windows, Activity Monitor on MacOS, or System Monitor on Ubuntu or a similar program, depending on your system) and see if this bandwidth can supported by your network with a speed test. 

Even if you’re not using more bandwidth than your network and internet connection can handle, the number of packets can still lead to an overload. However, it’s difficult to measure how many packets programs are sending (unless you’re using macOS) and what you can touch. However, you could try running multiple tests with different settings and guessing how your connection at least works.

Bad connections

Another likely cause is a bad cable, bad WiFi connection, bad router, or bad network card. If any part of the connection is broken or damaged, packets can be lost there. You should try switching from a wireless connection to a wired connection or swapping parts to see if that solves the problem. However, you can do this on your personal network as well as on that of your Internet Service Provider (ISP)) occur. 

ISP provider

In fact, it is quite likely that it is your ISP’s fault. There could be a bad cable going to your house, or there could be a problematic or inadequate router in their system. Depending on who your ISP is, they may not be overly cooperative in solving the problem. However, you will likely have to reach out to him to resolve the problem if you know it is not yours.

Game server

The packet loss could also be on the server side of the other service that you are trying to find problems with. This is more likely, for example, with a game that has suddenly grown in popularity. It may not be able to handle all players, so some packets will be dropped even though your connection is fine. 

Diagnosing whether it is you or the game is a major use case for this site. If a packet loss test says you have no packet loss but a game says you have, it is likely the problem with the game, not yours. Maybe contact the developers (or the server host). Sometimes packages aren’t actually lost because they arrive at some point, but they’re so late that it’s just as if they were. 

How to fix packet loss

How to fix packet loss depends on what is causing the packet loss. To be honest, packet loss is often caused by Internet Service Providers (ISPs, the acronym for Internet Service Providers ). When this happens, all you can do is convince your ISP to fix the problem (often a daunting task) or switch ISPs (unfortunately not an option for many). However, you can still fix your problem to make sure it’s not your fault. Perhaps that will help convince your ISP too.

First, make sure you don’t just overwhelm your connection. Try doing more tests with smaller sizes and less frequent packages to see if it works well with less intensive use. You can also check if you are using too much bandwidth:

Do a speed test to find out your maximum bandwidth, likely using a tool like Speedtest or Fast.com.

Compare your current bandwidth usage

Check the bandwidth page of your router. How exactly it works depends a lot on the router, but you can usually get there via the IP address. Enabling the router is the best option as it will reveal all of the devices connected to the network.

  • In Windows, open Resource Monitor and check the Network tab, or open Task Manager and check the Performance tab.
  • Under MacOS, open Activity Monitor and check the Network tab.
  • There are many tools on Linux that you might want to use, such as: B. bmon, slurm, tcptrack, ifotp, nethogs, speedometer, iptraf, and a ton more. If you’re using Linux, you should probably be able to find out for yourself.
  • On Ubuntu or Mint, you can also open the System Monitor and check the resources.

If your usage is high compared to your maximum bandwidth, try using less and see if that fixes the packet loss. Or, you can buy more bandwidth from your ISP if that is an option for you.

Test your hardware

Next, test all of your hardware. If possible, connect your modem (or wherever your Ethernet connection is coming from) directly to your computer. If that fixes the problem, replace the router or wireless card. If this persists, you can try using a different cable, network card, or computer.

If that doesn’t fix the problem, it’s likely with your ISP and they need to fix it. You should try to call them up to let them know of your problems and attempts, and pray that they will do something about it.

How to fix packet loss Fortnite

Packet loss occurs when one or more packets sent from your computer to Epic Games Fortnite servers and back from there do not arrive at their destination. You may be able to fix a packet loss using the command line parameters with the following steps:

  1. Open the Epic Games Launcher 
  2. Click on Settings .
  3. Scroll down and expand the Fortnite section .
  4. Check the box next to More command line parameters .
  5. Enter -limitclientticks in the empty text field , which will throttle network updates.
    Add further command line parameters

If you continue to experience packet loss after this, you can ask your internet provider for help.

How to fix packet loss Xbox One

Clearing the Xbox cache

Some users have easily solved this problem by clearing their corrupted cache. How to clear your cache

PRO TIP: If the problem occurs with your computer or laptop / notebook, you should try using Reimage Plus software which can scan the repositories and replace damaged and missing files. This will work in most cases where the problem is due to system corruption. You can download Reimage Plus by clicking here

  1. Press the Xbox button to open the guide. Navigate to Settings> Disc & Blu-ray> Blu-ray> Persistent Storage and select Clear Persistent Storage . You can do this multiple times to ensure that any corrupted cache files in the console’s memory are deleted. This will not delete any of your saved game data.
  2. Go back to the home screen and navigate to Settings> Network> Advanced Settings> Alternate MAC Address and select Erase and Restart .
  3. Press and hold the power button on your console for about 10 seconds to turn it off. Remove all cables attached to the console and reconnect them after a few minutes.
  4. Reconnect the cables to the console and turn it on.
  5. Go to the store and sign in to confirm the bug has been fixed.

Test the connection to Xbox Live

If the services are up and still having problems, test your network connection using the following steps.

  1. Go to the Xbox home screen and navigate to Settings> Network> Network Settings> Test Network Connection.
  2. If the packet loss is greater than 5%, then you should check and fix your internet connection or wait a few minutes and try again.