Why Is Windows 11 So Slow? 7 Reasons and How to Fix It

You upgraded to Windows 11 because it looked fresh, modern, and promised better performance.

But now?

File Explorer takes 5 seconds to open.

Right-clicking anywhere lags for 2 seconds.

Apps freeze for no reason.

Your RAM is constantly at 80% usage — even when you're "doing nothing."

You might think:

"Is my PC too old for Windows 11?"

Or worse:

"Is this just how Windows 11 is?"

No. Windows 11 is not supposed to be this slow.

And your PC is probably not the problem.

Many users have reported performance issues with Windows 11 — especially after recent updates. Microsoft has acknowledged some of these problems, particularly with File Explorer.

This guide covers 7 reasons why Windows 11 feels slow — and practical fixes for each one.

No reinstalling. No buying new hardware. Just actionable steps.

Let's go.

1. File Explorer Is Painfully Slow

File Explorer is one of the most common sources of performance complaints in Windows 11.

You open File Explorer — and wait.

You right-click — and wait.

You navigate to a folder — and wait.

Why this happens:

Windows 11's File Explorer is heavily integrated with:

• OneDrive — constantly syncing and checking file status
• Quick Access — loading recent files and frequent folders
• Search indexing — preparing search results
• Cloud providers — Dropbox, Google Drive, iCloud

These integrations can add extra work when you open or navigate through File Explorer, especially when cloud storage and recent-file features are active.

How to fix it:

1. Open File Explorer
2. Click the View menu (top bar) → Options → Change folder and search options
3. Under the General tab, change Open File Explorer to: from "Home" to "This PC"

4. Uncheck:

   • Show recently used files in Quick Access
   • Show frequently used folders in Quick Access
   • Show files from Office.com

5. Click Apply → OK

What to expect: This reduces the loading time significantly because File Explorer no longer queries OneDrive, recent files, or cloud statuses. Many users report much faster performance after this change.

2. Visual Effects and Animations Are Slowing You Down

Windows 11 looks beautiful — but those animations, transparency effects, and shadows cost performance.

On older or mid-range PCs, these effects can make everything feel laggy.

How to fix it:

1. Press Win + R, type sysdm.cpl, press Enter
2. Go to the Advanced tab
3. Under Performance, click Settings
4. Select Adjust for best performance (disables everything)
   • Or select Custom and keep only:
     • Smooth edges of screen fonts
     • Show thumbnails instead of icons

What you lose: Animations, shadows, and transparency.

What you gain: A snappier, more responsive PC.

Pro tip: You can also turn off Transparency effects in Settings → Personalization → Colors → Transparency effects → Off.

3. Memory Compression: When It Helps and When It Doesn't

Open Task Manager → Performance → Memory.

You might see:

"Memory Compression" using 200–500MB

This is a normal Windows feature that compresses RAM to fit more data. It's generally helpful, especially on systems with 8GB or less RAM.

However, on systems with 16GB+ RAM, Memory Compression can sometimes consume unnecessary CPU resources without providing significant benefit.

How to check if it's affecting you:

1. Open Task Manager → Performance → Memory
2. Check the "Memory Compression" value
3. Also monitor your CPU usage

Optional tweak (for 16GB+ systems only):

1. Open PowerShell as Administrator
2. Run: Get-MMAgent
3. Look for MemoryCompression — if it says True, it's enabled
4. To disable it: Disable-MMAgent -MemoryCompression
5. Restart your PC

Important: This is an optional tweak. Most users should leave Memory Compression enabled. Only consider disabling it if you have 16GB+ RAM and notice high CPU usage from memory management.

4. Background Services and Bloatware

Windows 11 comes with many services running by default.

Some are useful. Many are not.

Common resource-hungry services include:

• SysMain (SuperFetch) — preloads apps for faster startup
• Windows Search — indexes files (can use CPU/disk)
• Print Spooler — if you don't have a printer
• Connected User Experiences and Telemetry — sends usage data to Microsoft
• Xbox services — game features (if you don't game)

How to fix it:

1. Press Win + R, type services.msc, press Enter
2. Right-click any service → Properties
3. Change Startup type to Disabled (or Manual)
4. Click Apply → OK

Safe to disable (if you don't use them):

Be careful: Only disable services you understand. If unsure, research first.

5. Startup Programs Overload

This is the #1 reason PCs get slower over time.

Every app you install wants to start with Windows.

After a year, you have 20+ apps launching at boot.

Each one adds seconds to your boot time and consumes RAM and CPU.

How to fix it:

1. Press Ctrl + Shift + Esc to open Task Manager
2. Click the Startup tab
3. Sort by Startup Impact (High to Low)
4. Right-click and Disable everything you don't need immediately

Common offenders:

• Spotify
• Discord
• Adobe Creative Cloud
• Steam / Epic Games Launcher
• Zoom / Teams

Pro tip: You can still open these apps manually. They just won't slow down your boot.

6. OneDrive and Cloud Sync Overload

OneDrive is deeply integrated into Windows 11.

It constantly syncs files, checks for changes, and keeps your cloud storage updated.

On slower internet connections — or with large folders — OneDrive can consume significant CPU, memory, and disk I/O.

How to check:

1. Open Task Manager → Processes tab
2. Look for OneDrive — check its CPU/Memory/Disk usage

How to fix it:

1. Open OneDrive Settings (right-click OneDrive icon in system tray → Settings)
2. Under the Account tab → Choose folders — choose only essential folders to sync
3. Under the Sync and backup tab → pause syncing during work hours

Alternative: If you don't use OneDrive, uninstall it entirely — Settings → Apps → OneDrive → Uninstall.

7. Microsoft Copilot and AI Features

Windows 11 has been gradually adding AI features:

• Copilot (sidebar assistant)
• Recall (screenshots your screen periodically) — available in some regions
• AI-powered search
• AI-powered suggestions in File Explorer

These features can consume system resources — and many users prefer to disable them.

How to disable Copilot:

1. Right-click the taskbar → Taskbar settings
2. Toggle Copilot off

How to disable other AI features:

1. Open Settings → Privacy & security
2. Look for Recall & snapshots (if present) — disable it
3. Under Search permissions → turn off Search suggestions

For advanced users (Windows Pro):

1. Press Win + R, type gpedit.msc
2. Go to User Configuration → Administrative Templates → Windows Components → Windows Copilot
3. Set Turn off Windows Copilot to Enabled

What to expect: Disabling these features can improve performance on some systems, but the impact varies depending on your hardware and usage patterns.

Summary Table

What If You Want to Monitor Performance Automatically?

Manually checking all of the above takes time.

You have to:

• Check Task Manager regularly
• Monitor CPU, RAM, and Disk usage
• Watch for new startup items
• Track background services

Instead of doing all that manually, I built SysPulse — a lightweight Windows security and performance monitoring tool.

SysPulse:

• Tracks CPU, RAM, Disk, and Network usage in real-time
• Alerts you when processes spike or crash
• Logs startup changes and background services
• Uses less than 30MB of RAM — less than a single browser tab
• Sends Telegram notifications when unusual activity is detected

You can set it up once and let it watch your PC for you.

You can find it at: syspulse.pro

Final Thought

Windows 11 doesn't have to be slow.

Many performance issues come from:

• File Explorer settings
• Visual effects
• Startup overload
• Background services

Start with the easiest fixes:

1. Change File Explorer to open "This PC"
2. Disable visual effects
3. Turn off unnecessary startup apps

If you want to go further, disable background services, OneDrive syncing, and AI features.

The result: A faster, more responsive Windows 11 — without buying new hardware.

Have questions or a Windows 11 issue I didn't cover? Drop a comment below — I read every one.

Happy speeding!