The "You are disconnected from Photon" error is a common network error in PEAK when attempting to join a co-op game. This issue is typically caused by routing issues, software conflicts, or system settings. Various methods are used to resolve this, including changing launch parameters, region and IP address, and system settings.
What does the ClientTimeout error mean in Peak?
The failure occurs because the client stopped receiving timely confirmations from the Photon service, the cloud platform that enables co-op gaming. The connection can be interrupted for several reasons:
- Problems with the Internet.
- Failed network route.
- Restrictions from the provider.
- Windows Firewall Settings.
- Problems with the Photon service itself.
In addition to the reasons listed above, there may be others, which is why there is no universal way to fix the problem.
How to Fix "You've Been Disconnected from Photon: Client Timeout" Error in Peak
If you are having trouble connecting to PEAK, please first check your internet connection.
Configure launch options
Using Steam's launch options, you can force a connection to a server in a specific region. You can choose your own or a similar one without changing your IP address.
Open the game properties in Steam and enter one of the following commands in the launch parameters:
| Parameter | What is he doing |
| -photonRegion EU | Forces connection to Photon servers in Europe |
| -photonRegion US | Changes region to the USA |
For players in Russia, the first option is recommended. Try it, and if it doesn't work, try the second one. To delete the command, return to the properties and simply delete the line.
Run Peak with DirectX11
If the previous method didn't work, you can force DirectX 11 compatibility mode through the launch options. To do this, open the application properties and enter:
-force-d3d11
This can be combined with the previous method. To change the region to Europe and simultaneously launch with DX 11, enter:
-photonRegion EU -force-d3d11
Connect to a different IP address
The issue could be related to the IP address: sometimes Photon itself processes it incorrectly, or the ISP has issued a "dirty" network ID. This could also be due to blocking or internet slowdowns. In such cases, IP address changing utilities can help.
If you use this method, try selecting a server in your country or region in the app. If that fails, connect to an available international location.
Using tools to bypass blocking or speed up website loading may negatively impact your connection to Photon.
Disable vertical sync and set an FPS limit
Some users report that in-game settings have helped with the "client timeout" issue. Go to the "Graphics" tab and change the "V-sync" setting to "Off". Above, in the line "Max. frame rate", set the FPS limit corresponding to monitor refresh rate (60, 120 or 144 Hz) or slightly lower.
Run Peak as administrator
If you're playing through Steam, you won't find the "Run as administrator" option in the desktop shortcut's context menu. To access this option, navigate to the game's root folder:
- Right-click on PEAK in your Steam library.
- Hover over the "Manage" item and click "Show local files".
Right-click on the PEAK.exe file and select Run as administrator.
To automate this process, in the Compatibility tab of the file's properties, check the box next to "Run this program as an administrator."
Use an app to optimize your connection
Game boosters like LagoFast and Exitlag are great for troubleshooting network issues. They automatically reroute servers to optimize them, and sometimes help reduce latency or packet loss.
Please note that there is no guarantee that this method will resolve the Photon connection error. This method should be considered only as an option. Therefore, don't pay for a subscription right away—register and activate it first. trial periodIf this method helps and you enjoy using the app, you can purchase full access at donatov.net:
Disable mods and conflicting programs
Both third-party programs and mods can interfere with a stable connection. Remove the mods and then delete the folder. BepInEx from the root directory. After that, verify the integrity of the files through Steam or completely reinstall the game.
If there are programs running in the background that interfere with your network connection, close them and check if the game works.
Check if there is a utility on your PC cFosSpeed — it's included with many motherboards and can interfere with the connection to the Photon. Some users report that removing it resolves the issue.
Add Peak to your firewall exceptions
A network failure may occur because Windows' built-in security is blocking the program's connections.
- Open Windows Defender Firewall from the Start menu or Control Panel.
- Go to "Allow an app or feature through Firewall".
- Click "Allow another app".
- Click browse and select PEAK.exe in the root folder (…SteamLibrary\steamapps\common\PEAK).
Reboot your device and router
Restarting your PC will terminate frozen background processes and refresh the system's network settings. It's recommended to completely power off the router for 15-20 seconds to clear any accumulated sessions.
Check file integrity
If the crash is caused by corrupted game files, it can be quickly fixed:
- Open the Installed Files tab in the game properties in Steam.
- Click "Verify integrity of game files".
- Wait for the process to complete.
Change your DNS settings
Switching the system to public addresses from Google or Cloudflare often helps solve the problem:
- From Control Panel, go to Network and Sharing Center and select Change adapter settings.
- Open the properties of your active network connection.
- Find the “Internet Protocol version 4 (TCP/IPv4)” component, double-click on it and enter the new DNS: 8.8.8.8 / 8.8.4.4 or 1.1.1.1 / 1.0.0.1.
In Peak, the "You are disconnected from Photon" notification tends to reoccur, even if the issue has previously been resolved. If this occurs, check to see if your Steam launch options have been reset, or completely reinstall the game.
