Connection Troubleshooting - Log Reader Follow

Symptoms

If you’ve recently played a game with lots of lag or connection issues, you may have seen a few of these symptoms during your game:

  • Champions "sliding" across the map
  • Minions, champions, or spell animations briefly increasing in speed
  • Champions or minions continuing on a linear path, then "snapping" into place once your connection was restored
  • In-game commands (such as casting Q) are delayed, or in some cases don't happen
  • Spells or abilities appear to hit your opponent, but no damage is registered

Sound familiar? The automatic tool below can help. Just track down your network logs (locations below), and submit them to the tool, which will read the logs and explain what went wrong during the game.

 

Don't want to submit logs? Click here for a list of basic solutions.

Network logs are located here by default:

  • Windows: C:\Riot Games\League of Legends\Logs\Network Logs
  • MacOS: Click the "Upload Logs" button, press ⌘-Shift-G, and paste in: /Applications/League of Legends.app/Contents/LOL/Logs/Network Logs





NETWORK DIAGNOSTIC OVERALL RATING: MAJOR ISSUES

Ping Over Time

 

Your average ping was (X) milliseconds.

The worst ping you experienced was (X)ms. This means you experienced high ping during this game, which is likely where you were seeing issues. See below for a few recommendations to help out with this.

Packet Loss Over Time

 

Your average percentage of packet loss for this game was X%.

Overall, this means you had a high amount of packets lost during the game. This can be caused by various network issues, so please see below for a few common steps that can help reduce packet loss.




WHAT DOES THIS MEAN?

Packets are small bits of network communication that tell your game client what’s happening in the game. When a packet is lost, all other League communication on your network stops until that packet is picked up again.

Ping is the amount of time it takes for your computer and our server to communicate. A high, consistent ping results in the delay you sometimes feel between clicking and seeing your champion act. This is more predictable than packet loss; action is delayed, but smooth.

When ping is high, it increases the length of time it takes to retrieve a lost packet, causing delay and stuttering. To visualize this better, here’s what a connection with no packet loss looks like:

And here’s a connection with packet loss:




 

Solutions

A combination of high ping and high packet loss means that there are major issues with the network connection between your computer and League of Legends servers.

Before getting started on the following solutions, check out the server status page to see if there are any known issues affecting servers. You can also download the Hextech Repair Tool, which will help optimize your machine for League of Legends.

Quick fixes

  • If you’re playing on a wireless connection, try switching to a wired connection or moving as close to your router as possible.
  • Unplug your router and modem, leave them unplugged for 30 seconds, then plug them back in. This reset can often clear up intermittent network problems.
  • Close other network-heavy programs before playing a game (such as torrents, streaming video services, or other games).
  • Make sure you’re playing on the game servers closest to you if possible. If necessary, you can transfer your account to another region.
  • Network firewalls on your router or computer may cause degraded network performance. Check out our guide here for info on how to add exceptions for League of Legends.

In-depth solutions

  • Look into whether your router supports the Quality of Service (QoS) feature. QoS allows you to rank applications by priority, so the highest-priority application receives maximum bandwidth. This way, even if something else is happening on your network, it won’t degrade your League experience.
  • Contact your ISP to see if you’re eligible to upgrade your hardware. The latest networking hardware can improve your connection, and older hardware can cause degraded network performance over time.
  • If these steps do not improve your connection, please try contacting your ISP again to see if there are any known network issues in your area.

NETWORK DIAGNOSTIC OVERALL RATING: PING ISSUES

Ping Over Time

 

Your average ping was (X) milliseconds.

The worst ping you experienced was (X)ms. This means you experienced high ping during this game, which is likely where you were seeing issues. See below for a few recommendations to help out with this.

Packet Loss Over Time

 

Your average percentage of packet loss for this game was X%.

Overall, this means you had a low amount of packets lost during the game.




WHAT DOES THIS MEAN?

Ping is the amount of time it takes for your computer and our server to communicate. A high, consistent ping results in the delay you sometimes feel between clicking and seeing your champion act. This is more predictable than packet loss; action is delayed, but smooth.




 

Solutions

Before getting started on the following solutions, check out the server status page to see if there are any known issues affecting servers.

High ping can be caused by problems on your home network, with your Internet Service Provider (ISP), or, most importantly, by your relative location to the game servers you’re playing on. If your ping is consistent, but relatively high, you may be located far from your region’s game servers. In this case, troubleshooting steps may not be as useful.

Quick fixes

  • If you’re playing on a wireless connection, switch to a wired connection or move as close to your router as possible.
  • Unplug your router and modem, leave them unplugged for 30 seconds, then plug them back in. This reset can often clear up intermittent network problems.
  • Close other network-heavy programs before playing a game (such as torrents, streaming video services, or other games).
  • Network firewalls on your router or computer may cause degraded network performance. Check out our guide here for info on how to add exceptions for League of Legends.

In-depth solutions

  • Contact your ISP to see if you’re eligible to upgrade your hardware. The latest networking hardware can improve your connection, and older hardware can cause degraded network performance over time.
  • Look into transferring your LoL account to another server closer to where you live. Playing on a nearby game server will help alleviate consistently high ping.
  • If none of these steps are successful in improving your connection, contact your ISP again to see if there are any known network issues in your area.

NETWORK DIAGNOSTIC OVERALL RATING: PACKET LOSS ISSUES

Ping Over Time

 

Your average ping was (X) milliseconds, which means your ping was good overall.

Packet Loss Over Time

 

Your percentage of packet loss for this game was X%.

Overall, this means you had a high amount of packets lost during the game. This can be caused by various network issues, so please see below for a few common steps that can help reduce packet loss.




WHAT DOES THIS MEAN?

Packets are small bits of network communication that tell your game client what’s happening in the game. When a packet is lost, all other League communication on your network stops until that packet is picked up again. To visualize this better, here’s what a connection with no packet loss looks like:

And here’s a connection with packet loss:

Each packet lost causes a stutter in the game, a small freeze where appears that nothing is happening (or that your champion is moving somewhere they shouldn’t be).




 

Solutions

Before getting started on the following solutions, check out the server status page to see if there are any known issues affecting servers. Packet loss is generally caused by an issue with your Internet Service Provider (ISP). However, there are a few steps you can try on your home network to improve connectivity:

Quick fixes

  • If you’re playing on a wireless connection, switch to a wired connection or move as close to your router as possible.
  • Unplug your router and modem, leave them unplugged for 30 seconds, then plug them back in. This reset can often clear up intermittent network problems.
  • Close other network-heavy programs before playing a game (such as torrents, streaming video services, or other games).
  • Try forwarding the required ports in case traffic is being periodically blocked on your router.

In-depth solutions

  • Look into whether your router supports the Quality of Service (QoS) feature. QoS allows you to rank applications by priority, so the highest-priority application receives maximum bandwidth. This way, even if something else is happening on your network, it won’t degrade your League experience.
  • Contact your ISP to see if you’re eligible to upgrade your hardware. The latest networking hardware can improve your connection, and older hardware can cause degraded network performance over time.

NETWORK DIAGNOSTIC OVERALL RATING: NO ISSUES

Ping Over Time

 

Your average ping was (X) milliseconds, which means your ping was good overall.

The worst ping you experienced was (X)ms. This indicates your connection was stable for this game.

Packet Loss Over Time

 

You had minimal packet loss during this game, meaning you had a very stable connection.




WHAT DOES THIS MEAN?

There’s nothing wrong with your connection that we can see, at least during this game. If you know you’ve had issues in a recent game, try uploading a different net log for further help. It’s possible the symptoms above are caused by something else; check out our FPS issues guide to troubleshoot problems relating specifically to your machine.

Potential Solutions

Below is a list of general solutions that may resolve your issue. However, we are unable to give more specific explanation without submitted logs.

Quick fixes

  • If you’re playing on a wireless connection, switch to a wired connection or move as close to your router as possible.
  • Unplug your router and modem, leave them unplugged for 30 seconds, then plug them back in. This reset can often clear up intermittent network problems.
  • Close other network-heavy programs before playing a game (such as torrents, streaming video services, or other games).
  • Network firewalls on your router or computer may cause degraded network performance. Check out our guide here for info on how to add exceptions for League of Legends.
  • Try forwarding the required ports in case traffic is being periodically blocked on your router.

In-depth solutions

  • Contact your ISP to see if you’re eligible to upgrade your hardware. The latest networking hardware can improve your connection, and older hardware can cause degraded network performance over time.
  • Look into transferring your LoL account to another server closer to where you live. Playing on a nearby game server will help alleviate consistently high ping.
  • If none of these steps are successful in improving your connection, contact your ISP again to see if there are any known network issues in your area.

If you're still not seeing improvements after exhausting this list, it's possible the symptoms are being caused by something other than your connection. Check out our FPS issues guide to troubleshoot issues relating specifically to your machine.

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