Malwarebytes Slowing Down PC? How to Speed Up After Installing Antivirus

If your PC started running slowly after installing Malwarebytes, 👉 1-866-490-0338(USA/UK) ☎️ the fix is usually not to remove protection. A new antivirus install can trigger scans, background services, real-time checks, browser protection, startup tasks, and scheduled scans. The best approach is to update Malwarebytes, restart the computer, check what is using CPU or disk, adjust scan timing, and add safe exclusions only when needed.
Malwarebytes supports scheduled scans from the Scanner area, and its Allow List can exclude trusted files, folders, apps, websites, or IP addresses when you are confident they are safe. These two settings are useful for improving performance without turning off protection completely. ([help.malwarebytes.com][1])
.. Quick Answer: How do I speed up my PC after installing Malwarebytes? ✔ 1➜866((490))➜0338 ⚡
To speed up your PC after installing Malwarebytes, restart Windows, update Malwarebytes, let the first scan finish, remove other antivirus programs, reduce startup apps, schedule scans for idle time, and add trusted apps or folders to the Allow List only when necessary. Avoid disabling real-time protection as a normal speed fix.
.. Why Malwarebytes May Slow Down Your Computer
Malwarebytes may feel heavy right after installation because it is checking files, updating protection data, scanning startup areas, and setting up real-time protection. This is more noticeable on older laptops, low-RAM PCs, hard disk drives, or systems already running many background apps.
Common signs include:
* PC slow after installing Malwarebytes
* Malwarebytes using high CPU
* Malwarebytes scan slowing computer
* Browser slow after Malwarebytes install
* Apps opening slowly
* Windows startup taking longer
* Laptop fan running loudly
* Malwarebytes scan stuck or running too long
* Malwarebytes and another antivirus running together
A short slowdown during setup or scanning can be normal. If the PC stays slow all day, you need to check settings, conflicts, and system resources.
.. How Long Should Malwarebytes Slow Down a PC? ✔ 1➜866((490))➜0338 ⚡
A small slowdown can happen during the first scan or update. Once the first scan finishes, the system should feel normal again. If your PC remains slow after a restart and update, the issue may be another antivirus conflict, too many startup apps, a scheduled scan running at the wrong time, browser extensions, low RAM, or high disk usage.
Use this guide:
| Problem | Likely Cause | First Fix |
| | -- | -- |
| Slow during scan only | Scan load | Schedule scans for idle time |
| Slow at startup | Startup apps or background services | Disable unused startup apps |
| Browser slow | Extensions, web protection, ads, trackers | Review extensions |
| Whole PC slow | High disk/CPU usage | Check Task Manager |
| Malwarebytes freezes | Damaged install or conflict | Update, restart, then repair/reinstall |
| Game lag | Background scan or system load | Avoid scans during gaming |
.. 1. Restart Your PC After Installing Malwarebytes
A restart helps Windows and Malwarebytes load cleanly after installation.
Follow this simple reset:
1. Save your work.
2. Close all open programs.
3. Restart your computer.
4. Wait two minutes after login.
5. Open Malwarebytes.
6. Check protection status.
7. Test your normal apps again.
If Malwarebytes was still finishing setup in the background, this may reduce lag quickly.
.. 2. Let the First Scan Finish
After installing antivirus software, the first scan may take longer than usual. It checks files, startup items, and possible threat locations. Stopping the first scan repeatedly can make the same workload return later.
Do this instead:
1. Plug in your laptop charger.
2. Close browsers and heavy apps.
3. Let the first scan complete.
4. Restart your PC after the scan.
5. Use the computer normally again.
If performance improves after the first scan, the slowdown was likely temporary.
.. 3. Schedule Malwarebytes Scans for Idle Time
If Malwarebytes scans while you are working, gaming, editing, or browsing, your PC may feel slow. Change scheduled scans to run when you are away.
Malwarebytes says scheduled scans can be created from the **Scanner** card, using the **Scheduled scans** tab, where users choose scan type, start date, time, and frequency. It recommends Threat Scan as one scan type in that setup flow. ([help.malwarebytes.com][1])
Steps:
1. Open Malwarebytes.
2. Click the **Scanner** card.
3. Open **Scheduled scans**.
4. Edit the existing scan or create a new one.
5. Choose a time when you do not use the PC.
6. Save the schedule.
Good scan times include late night, lunch break, early morning, or while the laptop is plugged in.
.. 4. Remove Other Antivirus Programs
Running Malwarebytes with another full antivirus can sometimes cause performance issues. Two security tools may scan the same files, check the same downloads, or compete for CPU and disk activity.
Check for:
* Old antivirus trials
* Previous paid antivirus software
* Third-party firewall suites
* Extra anti-malware tools with real-time protection
* Security apps installed by your laptop brand
Uninstall unused security software, restart Windows, and test Malwarebytes again.
.. 5. Check Task Manager for CPU, Memory, and Disk Usage
Before changing Malwarebytes settings, confirm what is actually slowing the PC.
1. Press **Ctrl + Shift + Esc**.
2. Open **Task Manager**.
3. Sort by **CPU**.
4. Then sort by **Memory**.
5. Then sort by **Disk**.
6. Look for apps using high resources.
7. Close programs you do not need.
If disk usage stays near 100%, your PC may be slow because of Windows Update, cloud sync, old HDD storage, browser cache, or too many background apps— ☎️(+1) ↪ 866 490 0338 ↪not only Malwarebytes.
.. 6. Reduce Startup Apps
Malwarebytes may be blamed for startup lag when many apps are launching at the same time.
On Windows:
1. Press **Ctrl + Shift + Esc**.
2. Go to **Startup apps**.
3. Disable apps you do not need immediately.
4. Keep security and driver apps enabled.
5. Restart the PC.
Review apps like game launchers, chat apps, cloud sync tools, update managers, and unused utilities.
.. 7. Keep Malwarebytes Startup Protection Enabled
Do not speed up your PC by delaying or weakening protection unless you understand the risk. Malwarebytes’ general settings page says **Launch Malwarebytes in the background when Windows starts** is enabled by default, and it recommends leaving **Delay Real-Time Protection when Malwarebytes starts** off so protection starts immediately. ([help.malwarebytes.com][2])
A safer performance plan is:
* Reduce other startup apps.
* Schedule scans for idle time.
* Remove duplicate antivirus tools.
* Add narrow exclusions only for trusted folders.
* Keep Malwarebytes protection active.
.. 8. Add Safe Exclusions Using Malwarebytes Allow List
If one trusted app, folder, or website is slowed or blocked, use the Allow List carefully. Malwarebytes says users can add a file, folder, application, website, or IP address to the Allow List, but it also advises adding apps or files only when you are confident they are safe. ([help.malwarebytes.com][3])
Use exclusions for trusted items like:
* Large video project folders
* Developer build folders
* Virtual machine folders
* Known business software
* A trusted app executable
* A trusted internal website
Avoid excluding risky locations like:
* Downloads folder
* Desktop
* Entire C drive
* Browser profile folder
* Email attachments
* Unknown cracked apps
* Temporary folders
Broad exclusions can reduce security. Use the smallest possible exception.
.. 9. Check Browser Extensions
If only browsing is slow, the issue may be your browser, not the whole PC. Malwarebytes Browser Guard is designed to block malicious sites, phishing, scams, ads, trackers, and other unwanted content, and its listing says it can help make browsing cleaner and faster by blocking ads and trackers. ([Malwarebytes Forums][4])
Still, too many browser extensions can slow browsing. Check:
* Coupon extensions
* Old toolbars
* Unknown search extensions
* Download managers
* VPN extensions
* PDF converters
* Duplicate ad blockers
Disable unused extensions and restart the browser.
.. 10. Free Up Storage Space
Low disk space can slow scans, updates, browser loading, and Windows startup.
Clean these areas:
* Recycle Bin
* Downloads folder
* Temporary files
* Old installers
* Large videos
* Unused apps
* Browser cache
If your PC uses an old hard drive, upgrading to an SSD can make a much bigger speed difference than changing antivirus settings.
.. 11. Avoid Running Full Scans During Work
A full scan can use more system resources than a quick scan or scheduled threat scan. Run heavier scans when you do not need the PC.
Best practice:
* Use lighter scans for routine checks.
* Run full scans during idle time.
* Avoid scanning while gaming or editing.
* Keep the laptop plugged in.
* Do not schedule multiple scans close together.
.. 12. Repair or Reinstall Malwarebytes If Needed
If Malwarebytes stays slow, freezes, or fails to update after all basic fixes, the installation may be damaged.
Try this order:
1. Restart your PC.
2. Update Malwarebytes.
3. Check Task Manager.
4. Remove other antivirus tools.
5. Adjust scheduled scan timing.
6. Add safe exclusions only if needed.
7. Repair or reinstall Malwarebytes from the official source.
Do not download “Malwarebytes speed fix” tools from random websites.
.. What Happens After You Optimize Malwarebytes? ✔ 1➜866((490))➜0338 ⚡
After proper tuning, your PC should start faster, scans should interrupt you less, apps should open more smoothly, and browsing should feel cleaner. Malwarebytes should still remain active and protective.
After changes, check:
* Protection status
* Scan schedule
* Allow List entries
* Startup apps
* Task Manager usage
* Browser extensions
* Windows updates
.. People Also Ask: Malwarebytes Speed Up PC FAQs
..# Why is my PC slow after installing Malwarebytes? ✔ 1➜866((490))➜0338 ⚡
Your PC may be slow after installing Malwarebytes because the app is updating, running a first scan, checking files in real time, or running at the same time as another antivirus. Restart the PC, let the scan finish, and check Task Manager before changing protection settings.
..# How do I make Malwarebytes use less CPU? ✔ 1➜866((490))➜0338 ⚡
Schedule scans for idle time, close heavy background apps, remove other antivirus programs, reduce startup apps, and avoid running full scans while working. Malwarebytes scheduled scans can be managed from the Scanner card and Scheduled scans tab. ([help.malwarebytes.com][1])
..# Should I turn off Malwarebytes real-time protection to speed up my PC? ✔ 1➜866((490))➜0338 ⚡
No, not as a normal fix. It is safer to reduce startup apps, schedule scans, remove conflicting security tools, and use the Allow List carefully for trusted items. Malwarebytes recommends not delaying real-time protection at startup. ([help.malwarebytes.com][2])
..# How do I exclude a trusted app in Malwarebytes? ✔ 1➜866((490))➜0338 ⚡
Open Malwarebytes, go to **Detection History**, open the **Allow List**, choose **Add item**, and select the trusted file, folder, app, website, or IP address. Malwarebytes advises adding items only when you are confident they are safe. ([help.malwarebytes.com][3])
..# Why is Malwarebytes slowing down my browser? ✔ 1➜866((490))➜0338 ⚡
Browser slowdown may come from web protection, too many extensions, VPN tools, ad-heavy sites, cache issues, or browser conflicts. Review extensions and test another browser. Malwarebytes Browser Guard can also block ads and trackers, which may improve browsing on some sites. ([Malwarebytes Forums][4])
..# Can scheduled scans make Malwarebytes slow? ✔ 1➜866((490))➜0338 ⚡
Yes. If a scheduled scan runs while you are working, the PC may feel slow. Edit the schedule so scans run when the computer is idle or when you do not need heavy performance.
..# Is Malwarebytes slow on old PCs? ✔ 1➜866((490))➜0338 ⚡
It can feel heavier on older PCs with low RAM or hard disk drives, especially during scans. Reducing startup apps, scheduling scans, and upgrading to SSD storage can improve performance.
..# Should I uninstall Malwarebytes if my computer is slow? ✔ 1➜866((490))➜0338 ⚡
Do not uninstall it immediately. First restart, update Malwarebytes, check Task Manager, remove other antivirus tools, adjust scan timing, and review exclusions. Uninstall only if the issue continues after proper troubleshooting.
.. Conclusion: Best Way to Speed Up PC After Installing Malwarebytes
The best way to speed up your PC after installing Malwarebytes is to update the app, restart Windows, let the first scan finish, schedule future scans for idle time, remove duplicate antivirus software, and use the Allow List only for trusted files or apps. This keeps your computer faster without removing important protection.