Antivirus causing system slowdown

4.5

Your PC becomes sluggish or freezes whenever the antivirus is scanning.

Symptoms
  • High CPU usage
  • Slow file opening
  • Loud fans
Possible Causes
  • Full system scan
  • Real-time protection conflict
  • Low RAM

Step-by-Step Fix

1

Schedule Scans

Set full scans to run at night when you aren't using the PC.

2

Exclude Large Folders

If you have a folder with millions of tiny files (like code), exclude it from real-time scans.

3

Check for Multiple Antiviruses

Never run two real-time antiviruses at once; they will fight each other.

When to See a Technician

Modern antivirus should use less than 5% CPU when idle. If it's higher, it might be stuck on a corrupted file.

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