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High CPU usage in the client software

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Some sites have reported issues in recent versions of PaperCut where the client software consumes 100% CPU. This issue, although not yet fully diagnosed, seems to related to graphics driver issues and the use of transparency. This issue occurs when fast user switching is enabled and an active login session is switched out. Consider one of the following solutions:

Stop using fast user switching

Reconsider the use of fast user switching. In a multi-user network environment (rather than home use), fast user switching can actually be a disadvantage as the inactive sessions consume resources. A full logout is usually what the user intended.

Disable advanced graphics features

Following these steps will disable some advanced graphics effects in the client that seem to cause the high CPU issue on some systems.

  1. Go to the client directory in Windows. This will be be C:\Program Files\PaperCut NG\client\win or C:\Program Files (x86)\PaperCut NG\client\win
  2. Make a backup copy of the config.properties file.
  3. Open config.properties in a text editor.
  4. Remove the “#” from the start of the line “#disable-gui-effects=Y”. If you don’t find this line, please add the line “disable-gui-effects=Y” at the end of the file.
  5. Save config.properties
  6. Restart pc-client (the client executable).

Note: If the client is locally installed, you may need to edit the local copy of the config.properties file.


Categories: Troubleshooting Articles , User Client


Keywords: client , CPU , 100% CPU , CPU hog , CPU hogging , excessive CPU , fast user switching

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Last updated February 15, 2024