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What Causes High CPU Usage?

BY c9rmk
June 13, 2025
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Key Points on High CPU Usage

Causes of High CPU Usage

  1. Too Many Startup Apps

    • Initial Burst of CPU Usage: At startup, the CPU usage spikes due to loading startup apps and processes.
    • Extended High CPU Usage: With more startup apps, this high usage lasts longer as the CPU handles more tasks.
    • High Stabilization Baseline: Some apps continue running in the background after startup, leading to consistently high CPU usage.
  2. Resource-Hungry Apps

    • Impact of Intensive Apps: Applications such as gaming, video rendering, and advanced 3D design can heavily tax the CPU.
    • Solution: Lower the app settings (e.g., from ultra to lower settings) and ensure the app uses dedicated graphics.
  3. Background Apps

    • Difference from Startup Apps: Background apps may not begin at startup but can still consume significant resources when running unnecessarily.
    • Solution: Use the Task Manager to end unneeded background tasks.

Additional Points

  • Bugs and Malware: These can also contribute to high CPU usage.
    • Solution: Reset the PC to eliminate issues from malware.

Recommendations

  • Managing Startup Apps: Disable non-essential startup apps, especially those with a "high impact" label.
  • Monitoring App Usage: Verify that resource-intensive apps prioritize appropriate graphics settings and hardware.
  • Task Manager Utility: Regularly use the Task Manager to monitor and end unnecessary background processes.

Conclusion

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    What Causes High CPU Usage?