Quick decision
Looking for the lightest antivirus that won't slow things down
Your machine slows down with heavy security software running. You need real protection without the performance cost — whether it's an old PC, a gaming rig, or just a machine you care about staying fast.
ESET has the lowest consistent performance impact in independent tests while maintaining strong detection. The technical answer to this question.
ESETFits if you want minimal resource usage with top-tier detection. Gaming mode pauses scans automatically. The technical answer to this question.
Go to ESET
F-SecureMakes more sense if you also want a European privacy stance with minimal telemetry. Slightly lighter touch than ESET's feature set.
Go to F-SecureNoteIf the machine is slow and also showing strange behavior — redirects, unexpected popups — the cause may be malware, not your AV. Run a Malwarebytes scan first to rule that out.
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