Why Is PC Matic — Using High CPU — How Can I Optimize Without Losing Security —

If PC Matic is using high CPU, it is often because of real-time malware scanning, scheduled full-system scans, software updates, large file indexing, background maintenance, or conflicts with other security programs. In most cases, you can reduce CPU usage by adjusting scan schedules, updating the software, excluding trusted large folders when appropriate, closing unnecessary background applications, and avoiding multiple antivirus programs running at the same time—all without disabling your protection.

PC Matic is designed to provide continuous security by monitoring files, applications, and system activity. During certain operations, such as a full system scan or automatic update, CPU usage may temporarily increase. While short spikes are normal, consistently high processor usage can slow down your computer, increase fan noise, reduce battery life on laptops, and affect overall performance. Fortunately, you can optimize PC Matic without sacrificing its security features by understanding what is causing the increased resource usage and applying a few safe configuration changes.

Why Is PC Matic Using High CPU?

PC Matic performs several background security tasks that require processor resources. The amount of CPU used depends on your computer's hardware, the number of files being scanned, and what other applications are running.

Common reasons include:

• A scheduled full system scan is running.
• Real-time protection is actively scanning files.
• PC Matic is downloading or installing updates.
• A large number of files have recently changed.
• External drives are being scanned.
• Multiple security programs are running simultaneously.
• Background applications are consuming additional resources.
• Corrupted program files or outdated software.
• Startup optimization tasks are running.
• Windows is performing updates alongside PC Matic.

Most of these situations are temporary and resolve automatically once the task is complete.

Is High CPU Usage by PC Matic Normal?

Yes, temporary increases are generally expected.

You may notice higher CPU usage when:

• Running the first scan after installation.
• Performing a complete system scan.
• Scanning newly downloaded files.
• Installing security definition updates.
• Connecting an external hard drive.
• Recovering after Windows updates.

If CPU usage remains unusually high for several hours while the computer is idle, further troubleshooting is recommended.

How to Check Whether PC Matic Is Causing the High CPU Usage

Before making changes, verify that PC Matic is actually responsible.

You can check by:

1. Opening Windows Task Manager.
2. Selecting the Processes tab.
3. Reviewing current CPU usage.
4. Locating PC Matic processes.
5. Monitoring usage for several minutes.

If CPU usage drops after a scan finishes, the software is likely working normally.

How to Reduce PC Matic CPU Usage Without Losing Protection

The safest approach is to optimize how PC Matic performs its work instead of disabling important security features.

1. Let Active Scans Finish

One of the most common mistakes is interrupting a full scan.

Full scans naturally use more processor power because every accessible file is being analyzed.

Allow the scan to complete before making configuration changes.

2. Schedule Scans During Idle Hours

Running scans while you are working can slow your computer.

Instead:

• Schedule scans overnight.
• Choose times when the computer is rarely used.
• Avoid scan times during gaming or video editing.
• Use automatic scheduling whenever possible.

This reduces the impact on everyday performance.

3. Update PC Matic

Software updates often include performance improvements and bug fixes.

Check for:

• Program updates
• Malware definition updates
• Engine improvements
• Compatibility updates

Running the latest version helps improve efficiency.

4. Restart Your Computer

Long system uptime can gradually increase background resource usage.

Restarting your computer:

• Clears temporary memory.
• Ends stuck background processes.
• Refreshes system services.
• Completes pending updates.

Many CPU-related issues disappear after a clean restart.

5. Avoid Running Multiple Antivirus Programs

Running two real-time antivirus products simultaneously can create unnecessary scanning conflicts.

Examples include:

• Multiple antivirus suites
• Real-time malware scanners
• Third-party firewall software
• Security monitoring utilities

These programs may repeatedly scan the same files, increasing CPU usage.

Choose one primary real-time antivirus solution whenever possible.

6. Close Unnecessary Background Applications

Even if PC Matic is using some processor resources, other applications may be contributing to overall system load.

Close applications that are not currently needed, such as:

• Multiple browser windows
• Video editing software
• Virtual machines
• File synchronization tools
• Large downloads

Reducing background activity gives security software more available system resources.

7. Review Scan Settings

Some systems benefit from adjusting scan frequency.

Consider:

• Weekly full scans
• Daily quick scans
• Automatic scanning during idle time

These settings maintain strong protection while reducing noticeable slowdowns during active use.

8. Exclude Trusted Large Data Folders When Appropriate

If your workflow includes extremely large collections of files that rarely change, such as archived videos or completed backup folders, you may be able to configure trusted exclusions where appropriate.

Examples include:

• Archived media libraries
• Backup folders
• Read-only project archives

Only exclude folders that you fully trust. Never exclude folders that regularly receive downloads, email attachments, or executable files.

9. Update Windows

Operating system updates frequently improve compatibility with security software.

Install:

• Windows security updates
• Performance updates
• Driver updates
• Optional compatibility updates when recommended

After updating, restart the computer before testing CPU usage again.

10. Check Available Disk Space

Low storage can slow security scans.

Try to maintain adequate free space on your system drive.

Deleting unnecessary temporary files may improve overall performance during scanning.

Can Older Computers Experience Higher CPU Usage?

Yes.

Older systems often have:

• Slower processors
• Limited RAM
• Mechanical hard drives
• Older chipsets

Because scanning requires processor time and disk access, older hardware may experience more noticeable slowdowns compared to newer computers.

What Happens If You Disable Security Features?

Turning off important protection features may temporarily lower CPU usage, but it also increases security risks.

Possible consequences include:

• Malware infections
• Ransomware attacks
• Phishing threats
• Unsafe downloads
• Unauthorized software execution
• Reduced real-time monitoring

Instead of disabling protection, optimize how scans are scheduled and managed.

Troubleshooting Persistent High CPU Usage

CPU usage stays above 80% for hours

Restart the computer and verify that a scan is not stuck. If the issue continues, update PC Matic and Windows before testing again.

CPU spikes occur every few minutes

Scheduled background scans, software updates, or repeated file activity may be triggering frequent scans.

PC becomes slow only during startup

Startup optimization, Windows updates, and security initialization can temporarily increase processor usage immediately after booting.

Laptop fan runs constantly

High CPU activity naturally causes increased cooling. Confirm whether a scheduled scan is running before assuming there is a problem.

High CPU after a Windows update

Security software often rescans updated system files after major operating system updates.

Gaming performance decreases

Schedule full scans outside gaming hours and close unnecessary background applications before launching games.

Tips to Keep PC Matic Running Efficiently

A few maintenance habits can help minimize resource usage while maintaining excellent protection.

• Keep PC Matic updated.
• Install Windows updates regularly.
• Restart your computer periodically.
• Schedule scans during idle hours.
• Avoid multiple antivirus products.
• Remove unused software.
• Keep sufficient free storage space.
• Scan external drives only when needed.
• Use trusted exclusions carefully.
• Monitor Task Manager occasionally.

These practices help maintain both security and performance.

What Happens After Optimizing PC Matic?

Once optimized correctly, you should notice:

• Lower average CPU usage during daily work.
• Faster application launches.
• Smoother web browsing.
• Improved multitasking.
• Reduced fan noise.
• Better battery life on laptops.
• Full malware protection remaining active.
• More consistent system responsiveness.

Most users achieve a good balance between performance and security without turning off any major protection features.

When Should You Contact PC Matic Support?

If CPU usage remains unusually high after updating PC Matic, restarting your computer, adjusting scan schedules, checking for conflicting security software, and confirming that no scan is stuck, consult PC Matic's official support resources. Their support team can help identify product-specific issues, corrupted installations, or compatibility problems that may require advanced troubleshooting. Always rely on official documentation for current configuration recommendations and avoid downloading unofficial optimization tools that claim to improve antivirus performance.

People Also Ask

Why is PC Matic using so much CPU?

High CPU usage is commonly caused by real-time protection, full system scans, malware definition updates, or scanning large numbers of files.

Is high CPU usage during a scan normal?

Yes. Full security scans analyze thousands of files and temporarily require additional processor resources.

Can I lower PC Matic CPU usage without disabling protection?

Yes. Scheduling scans during idle hours, updating the software, avoiding multiple antivirus programs, and optimizing scan settings can reduce CPU usage while maintaining security.

Does PC Matic slow down older computers?

Older computers with slower processors and limited memory may experience more noticeable performance reductions during intensive scanning.

Should I stop a scan if CPU usage is high?

Usually not. Allowing the scan to complete is generally the safest approach unless the application becomes unresponsive for an unusually long period.

Can Windows updates affect PC Matic performance?

Yes. After major updates, PC Matic may rescan changed system files, temporarily increasing processor usage.

Will adding trusted exclusions improve performance?

Trusted exclusions can reduce scanning time for large, verified folders, but they should only be used for files and locations that are known to be safe.

Does running another antivirus increase CPU usage?

Yes. Multiple real-time antivirus programs may repeatedly scan the same files, creating unnecessary processor load.

Why is CPU usage high even when I'm not using my computer?

Background scans, automatic updates, scheduled maintenance, or Windows optimization tasks may still be running while the computer appears idle.

When should I reinstall PC Matic?

Consider reinstalling only after confirming that updates, restarts, scan scheduling, and compatibility checks have not resolved persistent CPU usage problems.

Conclusion

Temporary high CPU usage from PC Matic is usually a normal result of security scanning, software updates, or background maintenance. Rather than disabling protection, focus on optimizing scan schedules, keeping both Windows and PC Matic updated, avoiding conflicts with other security programs, and maintaining your computer regularly. These adjustments help reduce processor usage while preserving the strong real-time protection that keeps your system secure against modern threats.