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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