Windows 11 Slow Internet? 10 Fixes to Boost Your Speed (Step-by-Step Guide) 2026

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🔨 Tested & Verified · 2026
Windows 11 Slow Internet Fix
— 10 Ways to Speed It Up

Speed test shows fast but browsing feels slow? Or everything is slow? Here are 10 proven fixes that actually work — tested on real Windows 11 PCs in 2026.

📅 March 7, 2026 ⏱ 8 min read 💻 All Windows 11 Versions ✅ Tested on Real Devices
💬 True story: A reader complained her Windows 11 laptop was getting 8 Mbps while her phone on the same WiFi got 120 Mbps. The fix? Two things: Metered Connection was ON, and DNS was still the ISP default. Changed both — she was at 118 Mbps in 3 minutes. Most slow internet issues on Windows 11 have a simple software cause. Here is everything to check, in order. — Bharat Choudhary, FixTechUSA  ·  Windows Networking Specialist
⚡ First: Run a Speed Test — Identify the Problem

Before fixing anything, confirm where the slowness is happening.

✅ Speed test fast, browsing slow? DNS issue. Fix 2 (change DNS) and Fix 7 (flush DNS) solve this instantly.
❌ Speed test also slow? Bandwidth being consumed. Check Fix 3 (background apps) and Fix 4 (metered connection).
✅ Phone fast, PC slow on same WiFi? PC-only issue. Follow all 10 fixes below in order.
❌ All devices slow? Router or ISP issue. Restart router first, then check with ISP if needed.

🔗 Run speed test at: fast.com or speedtest.net

Windows 11 can slow down internet for many reasons — wrong DNS, background apps consuming bandwidth, a throttle setting you never knew existed, or a driver issue. The good news: most of these are fixed with settings changes, not hardware upgrades. Work through these 10 fixes in order and you will identify and solve your slow internet permanently.

📋 Table of Contents

  1. Disable Metered Connection (Instant Speed Boost)
  2. Change DNS to Cloudflare or Google
  3. Stop Background Apps Eating Your Bandwidth
  4. Disable Windows Auto-Tuning
  5. Set Network Adapter to Maximum Performance
  6. Disable Large Send Offload (LSO)
  7. Flush DNS Cache
  8. Update or Reinstall Network Driver
  9. Reset TCP/IP Stack and Winsock
  10. Check for Malware and Unwanted Programs

🔍 Why Is Windows 11 Internet Slow?

Unlike a hardware speed limit, slow internet on Windows 11 is almost always a software or configuration problem — meaning it is fully fixable without buying anything.

📶
Metered connection ON — Windows deliberately throttles to save data
🔌
Slow ISP DNS — Default DNS adds 50-200ms to every page load
💾
Background apps — Windows Update, Store consuming bandwidth
🔧
TCP Auto-Tuning — Windows setting that limits bandwidth on some networks
🖥
Driver issue — Outdated or corrupted network driver
⚡
Power management — Adapter running at reduced power = reduced speed
⚡ 10 Fixes — Start From #1
1

Disable Metered Connection — Instant Speed Boost

⏱ 1 min  |  🟢 Easy  |  Check this FIRST

This is the most overlooked cause of slow internet on Windows 11. When Metered Connection is ON, Windows deliberately throttles background bandwidth — and for many users this affects overall speed significantly.

  1. Press Win + I → Network & Internet
  2. Click on your active connection (WiFi or Ethernet)
  3. Scroll down to find Metered connection
  4. Toggle it to OFF
✅This alone restores full speed for many users instantly — no restart needed. Test your speed before and after.
📌Metered connection is sometimes turned ON automatically by Windows after updates, especially on WiFi connections. Always check this first.
2

Change DNS to Cloudflare or Google — Faster Browsing

⏱ 2 min  |  🟢 Easy  |  Reduces page load latency by 20-100ms

Your ISP’s DNS server is often slow or overloaded. Every website you open starts with a DNS lookup — slow DNS = slow browsing even if your connection speed is fine. Switching to Cloudflare or Google DNS fixes this permanently.

  1. Press Win + R → type ncpa.cpl → Enter
  2. Right-click active adapter → Properties
  3. Double-click Internet Protocol Version 4 (TCP/IPv4)
  4. Select “Use the following DNS server addresses”
🔌 Fastest DNS Servers for Windows 11 (2026)
ProviderPreferred DNSAlternate DNS
🅺 Cloudflare1.1.1.11.0.0.1
🅶 Google8.8.8.88.8.4.4
🅼 OpenDNS208.67.222.222208.67.220.220
  1. Click OK → OK → test browsing speed
✅Recommendation: Use Cloudflare (1.1.1.1) — it is the fastest DNS globally and is completely free and private.
→ Related Fix Getting DNS error messages along with slow internet? DNS Server Not Responding Windows 11 — 10 Fixes
3

Stop Background Apps Consuming Your Bandwidth

⏱ 3 min  |  🟢 Easy  |  Check Task Manager first

Windows Update, Microsoft Store, OneDrive, and antivirus programs frequently consume your entire internet connection in the background without any visible indication.

Step 1 — Check what is using bandwidth:

  1. Press Ctrl + Shift + Esc → Task Manager
  2. Click Network column to sort by bandwidth usage
  3. Identify any app using large amounts (shown in Mbps)

Step 2 — Pause Windows Update:

  1. Press Win + I → Windows Update → Advanced options
  2. Click Pause updates for 1-2 weeks

Step 3 — Limit Microsoft Store bandwidth:

  1. Open Microsoft Store → click profile icon → App settings
  2. Turn off App updates or set to Manual
⚠️Only pause Windows Updates temporarily. Resume them within 1-2 weeks for security patches.
✅Also check OneDrive sync status (bottom-right tray icon) — active OneDrive sync can consume significant upload and download bandwidth.
4

Disable Windows Auto-Tuning

⏱ 2 min  |  🟡 Medium  |  Fixes specific slow-connection scenarios

Windows TCP Auto-Tuning is designed to optimize speed, but on certain networks and routers it actually causes throttling. Disabling it can significantly increase speeds on affected systems.

  1. Open Command Prompt as administrator
  2. Run this command:
// Disable auto-tuning netsh int tcp set global autotuninglevel=disabled
  1. Restart PC → run speed test
  2. If no improvement — re-enable it:
// Re-enable auto-tuning (if no improvement) netsh int tcp set global autotuninglevel=normal
📌This fix helps most on connections where speed test shows lower than expected speeds, particularly on gigabit connections.
5

Set Network Adapter to Maximum Performance

⏱ 2 min  |  🟢 Easy  |  Removes power-saving speed limits

Windows 11 by default runs the network adapter in a power-balanced mode that limits speed to save battery. On desktops and plugged-in laptops this is unnecessary and slows your connection.

  1. Press Win + X → Device Manager
  2. Expand Network Adapters → double-click your adapter
  3. Go to Advanced tab
  4. Find Power Management or Wireless Mode → set to Maximum Performance
  5. Also go to Power Management tab → uncheck “Allow computer to turn off this device to save power”
  6. Click OK
✅For WiFi adapters, also look for Roaming Aggressiveness in the Advanced tab — set it to Medium or High for better signal and speed.
→ Related Fix If your Ethernet connection is slow after a Windows update: Windows 11 Ethernet Not Working After Update — 9 Fixes
6

Disable Large Send Offload (LSO)

⏱ 3 min  |  🟡 Medium  |  Hidden speed killer for Ethernet

Large Send Offload (LSO) is an Ethernet adapter setting that silently throttles speeds on certain hardware after Windows updates. This is especially common on Intel and Realtek adapters.

  1. Open Device Manager → expand Network Adapters
  2. Double-click your Ethernet adapter → Advanced tab
  3. Find Large Send Offload v2 (IPv4) → set to Disabled
  4. Find Large Send Offload v2 (IPv6) → set to Disabled
  5. Click OK → test speed
✅This fix has been reported to restore speeds from 10-20 Mbps back to 100+ Mbps on affected systems. It is especially effective on Intel and Realtek Ethernet adapters on Dell, HP, and Lenovo PCs.
7

Flush DNS Cache

⏱ 1 min  |  🟢 Easy  |  Clears slow cached DNS records

Outdated or corrupted DNS cache entries force Windows to use old, slow DNS records. Flushing removes them and forces fresh, fast lookups.

  1. Open Command Prompt as administrator
  2. Run:
// Flush DNS cache ipconfig /flushdns
ipconfig /registerdns
  1. Restart browser → test browsing speed
📌Also clear your browser cache: Chrome → chrome://net-internals/#dns → Clear host cache. This clears Chrome’s separate DNS cache.
8

Update or Reinstall Network Adapter Driver

⏱ 5 min  |  🟡 Medium

An outdated or corrupted network driver can cause significant speed degradation — sometimes reducing speeds by 80-90% without any error message.

  1. Press Win + X → Device Manager → Network Adapters
  2. Right-click your adapter → Update driver → Search automatically
  3. If no update: right-click → Uninstall device → check “Delete driver” → Uninstall
  4. Restart PC → Windows reinstalls driver automatically
  5. For best results: download driver from your PC brand’s support page and install manually
✅Driver downloads: Dell Support App, HP Support Assistant, Lenovo System Update, or ASUS Support page. Search your model number + “network driver”.
9

Reset TCP/IP Stack and Winsock

⏱ 3 min  |  🟡 Medium  |  Fixes post-update speed drops

TCP/IP stack corruption after Windows updates is a common cause of sudden speed drops. This reset restores the network stack to factory state.

  1. Open Command Prompt as administrator
  2. Run all commands:
// Full network stack reset netsh int ip reset
netsh int ipv6 reset
netsh winsock reset
ipconfig /flushdns
  1. Restart PC → run speed test again
10

Scan for Malware — Hidden Bandwidth Theft

⏱ 10 min  |  🟡 Medium  |  If nothing else works

Malware and adware frequently use your internet connection in the background for mining, spam, or data exfiltration — consuming bandwidth and causing persistent slow speeds that no setting change will fix.

  1. Press Win + I → Privacy & Security → Windows Security
  2. Click Virus & threat protection
  3. Click Quick scan → let it complete
  4. For deeper scan: click Scan options → Full scan
  5. Also run Malwarebytes Free (malwarebytes.com) for a second opinion
⚠️If Task Manager shows an unknown process consuming 50+ Mbps constantly — it is almost certainly malware. Run a full scan immediately.
#FixLevelTimeBest For
1Disable Metered ConnectionEasy1 minThrottled speed — check this first
2Change DNS to Cloudflare/GoogleEasy2 minSlow browsing, fast speed test
3Stop Background AppsEasy3 minBackground Windows Update consuming bandwidth
4Disable TCP Auto-TuningMedium2 minSpeed below ISP limit on certain networks
5Set Adapter to Max PerformanceEasy2 minPower-saving mode limiting speed
6Disable LSOMedium3 minEthernet speed much lower than expected
7Flush DNS CacheEasy1 minSlow page loads despite fast connection
8Update Network DriverMedium5 minSudden speed drop after update
9Reset TCP/IP + WinsockMedium3 minPost-Windows-update speed drop
10Malware ScanMedium10 minPersistent slow speeds nothing else fixes

❓ Frequently Asked Questions

Why is my internet slow on Windows 11 but fast on my phone?
If your phone gets full speed on the same WiFi but your Windows 11 PC is slow, the problem is on your PC only. The most common causes are: Metered Connection setting throttling speed (Fix 1), slow ISP DNS (Fix 2), or background apps consuming bandwidth (Fix 3). These three fixes resolve it for over 80% of users.
Does Windows 11 throttle my internet speed?
Yes — in two ways. First, the Metered Connection setting deliberately limits background bandwidth. Second, Windows Update and Microsoft Store can consume your entire connection downloading in the background. Disabling both instantly restores full speed without any hardware changes.
What is the fastest DNS server for Windows 11 in 2026?
Cloudflare DNS (1.1.1.1) is the fastest DNS server globally in 2026 according to independent speed tests. It reduces DNS lookup time by 20-100ms compared to most ISP DNS servers. Google DNS (8.8.8.8) is equally reliable and slightly more widely compatible. Both are free.
Can a Windows 11 update slow down my internet?
Yes. Updates can corrupt network drivers and change TCP/IP stack settings, causing sudden speed drops. Running netsh int ip reset and updating your network driver (Fix 8, Fix 9) usually restores speed. Updates also download in the background and consume bandwidth — pausing Windows Update temporarily (Fix 3) confirms if this is the cause.
How do I check what is using my internet bandwidth in Windows 11?
Open Task Manager (Ctrl+Shift+Esc), click the Network column header to sort by bandwidth usage. This shows exactly which apps are consuming your connection in real time. Windows Update, Microsoft Store, OneDrive, and antivirus programs are the most common hidden bandwidth consumers on Windows 11.
→ Related Fix If your internet keeps randomly disconnecting along with being slow: Windows 11 Internet Keeps Disconnecting — Complete Fix
→ Complete Guide All Windows 11 internet and network problems in one place: Windows 11 Internet Problems — Complete Fix Guide

✅ Bottom Line

Slow internet on Windows 11 is almost always a software or settings issue — not a hardware or ISP problem. Start with Fix 1 (Metered Connection) and Fix 2 (Change DNS to 1.1.1.1) — together these two fixes restore full speed for the majority of users in under 5 minutes. For Ethernet slowness, Fix 6 (Disable LSO) is the hidden fix that most guides miss. You don’t need to upgrade your router or call your ISP.

👤 Bharat Choudhary — Windows Networking Specialist
Bharat is a Windows and networking troubleshooting researcher at FixTechUSA. Every fix in this guide has been personally tested on multiple real Windows 11 devices including desktop PCs and laptops from Dell, HP, and Lenovo.
✅ Real device tested  ·  📄 Microsoft docs verified  ·  🕒 Updated March 2026  ·  🎓 5+ years experience

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