Cisco Webex is a popular tool for online meetings and collaboration. However, some Windows 11 users notice that Webex sometimes causes high CPU usage. This can slow down your computer and affect performance during meetings.
High CPU usage means your processor is working harder than usual, which can cause lag or overheating. Fortunately, there are several simple ways to reduce Webex’s CPU usage and improve system stability.
This guide will walk you through easy steps to identify and fix the high CPU usage issue with Cisco Webex on Windows 11. Each step includes explanations so you understand why it helps.
Whether you’re a beginner or moderately experienced, following these instructions can bring your CPU usage back to normal levels.
Quick Note Before You Begin
- Make sure your Windows 11 is fully updated. Sometimes, system updates fix compatibility and performance issues.
- Check that you are using the latest version of Cisco Webex. Older versions may have bugs causing high CPU use.
- Close any other resource-heavy applications running alongside Webex, as they can contribute to overall CPU load.
- Restart your computer before starting the troubleshooting process to clear temporary system issues.
Step 1: Monitor CPU Usage Using Task Manager
Before making changes, it’s important to confirm that Webex is causing the high CPU usage.
- Right-click the Start button and select Task Manager.
- In the Processes tab, look for Cisco Webex or Webex.exe.
- Check the CPU column to see how much processor power Webex is using.
If Webex consistently uses a high percentage of CPU (above 30%-40%), proceed to the next steps.
Step 2: Update Cisco Webex to the Latest Version
Updating Webex ensures you have the latest performance fixes and security patches.
- Open the Webex application.
- Click on your profile picture or initials in the top-right corner.
- Select Check for Updates from the dropdown menu.
- If an update is available, follow the prompts to download and install it.
Restart your computer after updating to apply all changes properly.
Step 3: Adjust Webex Video Settings
Video processing can be CPU intensive. Lowering video quality can reduce resource use.
- Open Webex and start or join a meeting.
- Click on the Settings or Video icon.
- Reduce video resolution or turn off your video temporarily if possible.
- You can also disable features like virtual backgrounds or video filters.
This reduces the amount of data your CPU needs to process during meetings.
Step 4: Disable Unnecessary Startup Programs
Some programs running in the background can conflict with Webex or consume CPU resources.
- Press Ctrl + Shift + Esc to open Task Manager.
- Go to the Startup tab.
- Look for programs you rarely use and select Disable to prevent them from starting automatically.
- Restart your PC after making changes.
This helps free up CPU resources when Webex runs.
Step 5: Clear Webex Cache and Temporary Files
Cached data can sometimes become corrupted and cause performance issues.
- Close Webex completely (check Task Manager to ensure it’s not running).
- Press Windows + R, type
%appdata%, and press Enter. - Find and open the Webex folder.
- Delete the contents inside this folder to clear cache.
- Restart Webex and check if CPU usage improves.
Step 6: Adjust Windows 11 Performance Settings
Optimizing Windows for better performance can help reduce CPU strain during Webex use.
- Press Windows + S and type View advanced system settings.
- Click the result to open System Properties.
- Under the Advanced tab, click Settings in the Performance section.
- Choose Adjust for best performance or customize which visual effects to disable.
- Click Apply and then OK.
This reduces unnecessary graphical effects and frees CPU power.
Step 7: Reinstall Cisco Webex
If the problem persists, reinstalling Webex can fix corrupted files or settings.
- Open Settings > Apps > Installed apps.
- Find Cisco Webex and click Uninstall.
- Restart your computer after uninstalling.
- Download the latest Webex installer from the official Cisco website and install it.
This gives you a fresh start and often resolves stubborn issues.
Alternative and Advanced Options
- Use Webex Web Version: If the desktop app causes issues, try using the Webex meeting through your browser to reduce CPU load.
- Update Device Drivers: Outdated graphics or audio drivers can cause high CPU usage. Update drivers via Device Manager or your PC manufacturer’s website.
- Scan for Malware: Sometimes malware affects system performance. Run a full antivirus scan to rule out infections.
Frequently Asked Questions (FAQs)
Why does Cisco Webex use so much CPU?
Webex uses CPU power mainly for video processing, screen sharing, and encryption during meetings. Poor optimization or bugs can cause excessive CPU use.
Is high CPU usage by Webex harmful?
High CPU usage can slow down your computer and cause it to heat up, but it’s not directly harmful. However, prolonged strain may affect hardware longevity.
Can I limit Webex CPU usage?
Not directly, but reducing video quality, disabling virtual backgrounds, and closing other apps can help lower CPU consumption.
Does updating Windows help with Webex performance?
Yes, Windows updates often include fixes and improvements that can enhance compatibility and reduce resource conflicts.
Should I use the Webex web app instead of the desktop app?
The web app can be less demanding on your CPU and is a good alternative if the desktop version causes issues.
When Nothing Works
If you have tried all the above steps and still experience high CPU usage, consider contacting Cisco Webex support for professional help. You can visit their official support page at https://help.webex.com/.
Additionally, you might want to check your hardware specifications. Older or less powerful PCs may struggle with video conferencing software, and upgrading your hardware could be the long-term solution.
Conclusion
High CPU usage by Cisco Webex on Windows 11 can disrupt your workflow but is usually fixable with simple steps. Start by monitoring CPU usage and updating both Windows and Webex.
Adjust video settings and clear caches to reduce the processing load. If necessary, optimize Windows performance settings or reinstall the application.
For advanced users, updating drivers and scanning for malware are good options. When all else fails, seek official support or consider hardware upgrades.
By following this step-by-step guide, you can enjoy smoother Webex meetings without worrying about your computer slowing down.