I have an HP laptop with Windows 11 and Defender is eating up resources like crazy. The computer freezes when it's doing a scan. Is it worth disabling it and installing a different antivirus, or is there a way to optimize the one that comes with it?
Before you switch antivirus programs, try tweaking Defender first! Go to Settings > Privacy and security > Windows Security > Threat manager and turn off scheduled scans during hours when you're not using your computer, or lower the frequency. You can also exclude folders you know are safe (documents, verified downloads) so it doesn't constantly scan them. If it's still slowing things down after that, then yeah, consider a third-party option, but honestly most people who switched ended up regretting it because other antivirus programs are just as heavy or worse! The thing is Windows 11 tends to be aggressive with scans, so you probably just need to configure it better.
A lot of people don't know that Defender also has a "performance" option in those same settings where you can aggressively reduce how many resources it uses without turning it off completely. For me, changing the process priority level in Task Manager worked - I lowered it to "low priority" so it doesn't lock everything up when it's scanning. If you're still having issues after that, then it's worth looking at other options, but try that first because it makes a pretty big difference in how it feels.
Defender on Windows 11 can eat up a ton of CPU during scans, but before you switch antivirus, try this: open Task Manager, go to "Background processes" and look for "Antimalware Service Executable" - you can see exactly how much memory it's using in real time. What most people don't do is go into Settings > Privacy and security > Exclusions and add the folders where you keep large files or use constantly (work documents, projects, etc) so Defender doesn't scan them every time you touch them. That should free up a lot for you without leaving your laptop unprotected.
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