What to do when Google Chrome slows down after changing DNS
If you notice that your Chrome speed slows down after changing DNS, do not worry. You can often fix this by switching your DNS settings back to automatic. Many users think DNS changes work instantly, but ISPs often cache DNS records, which can delay updates. You might also see slower page loads at first because short TTLs require more frequent lookups. If you are using Japan hosting or other overseas servers, DNS routing can add extra latency, so testing different providers is especially important. Try restarting your modem or router and test different DNS servers. This issue is common and usually easy to fix.
People often misunderstand how DNS caching works.
Internet providers may not recognize DNS changes right away.
Quick DNS updates can sometimes increase the time it takes for pages to load.
Key Takeaways
If Chrome slows down after changing DNS, switch back to automatic DNS settings for a quick fix.
Always check and verify your DNS settings to ensure they are applied correctly and functioning.
Flushing the DNS cache can help Chrome load pages faster by removing outdated information.
Restarting your modem and router can resolve many network issues that affect Chrome speed.
Testing different DNS servers can improve browsing speed; consider using fast options like Cloudflare or Google DNS.
Confirm DNS Change
Check Current DNS Settings
You should always check your current DNS settings after making any changes. This step helps you confirm that your device uses the DNS server you selected. On Windows, open the Command Prompt and type ipconfig /all. Look for the “DNS Servers” line. On macOS, go to System Settings, then Network, and select your active connection. You will see the DNS servers listed there.
Tip: If you see numbers you do not recognize or your old DNS provider, your change may not have worked.
Verify DNS Change Applied
Once you check your settings, you need to verify that the DNS change works as expected. You can use the command nslookup google.com in your terminal or Command Prompt. If you see a valid IP address, your DNS resolves correctly. If you get errors like NXDOMAIN, SERVFAIL, or a timeout, your DNS is not working right. Try pinging 8.8.8.8 to see if your internet connection works. If the ping succeeds but websites do not load, the problem is likely with your DNS.
If your speed slows down after changing DNS, you can always switch back to automatic DNS. On Windows, go to your network adapter settings and select “Obtain DNS server address automatically.” On macOS, remove any custom DNS entries and let your system use the default settings. This step often restores normal browsing speed.
Checking and verifying your DNS settings helps you spot problems early.
Switching back to automatic DNS is a quick fix if you notice issues.
When Chrome Speed Slows Down
When you notice that Chrome speed slows down after a DNS change, you can take several steps to restore your browsing experience. DNS issues can cause delays in loading web pages, especially if the browser cannot find the correct server quickly. DNS resolution time plays a big role in how fast Chrome loads pages. If the hostname is not cached, Chrome must make a DNS query, which can add hundreds of milliseconds to the total load time. This delay can feel significant, especially when you expect fast results.
Revert DNS to Automatic
If your speed slows down right after changing DNS settings, you should try switching back to automatic DNS. Many users find that their internet returns to normal once they let the system pick the DNS server. On Windows, open your network adapter settings and select “Obtain DNS server address automatically.” On macOS, remove any custom DNS entries. This step helps your device use the default DNS servers provided by your internet service provider.
Tip: Automatic DNS settings often provide the most stable and compatible experience, especially if you are unsure which DNS server to use.
Several factors can cause Chrome to slow down after a DNS change:
Slow ISP DNS servers can add 80-200ms per query.
Stale or corrupted DNS cache may cause repeated slow lookups.
Geographic distance to the DNS server can increase latency.
CNAME chains require multiple lookups, which increases response time.
Low TTL values force constant re-queries.
VPN or proxy usage may route queries through slower servers.
Network congestion can result in packet loss and delays.
IPv6 fallback issues can double lookup times.
If you see that Chrome speed slows down, reverting to automatic DNS is a quick way to test if the problem comes from your custom DNS settings.
Flush DNS Cache
Sometimes, a stale or corrupted DNS cache can cause Chrome to load pages slowly. When the cache contains outdated information, the browser may struggle to find the correct server addresses. Flushing the DNS cache removes these old entries and forces Chrome to look up fresh information.
You can flush the DNS cache in Chrome by following these steps:
Open a new tab and go to
chrome://net-internals/#dns.Click on Clear host cache.
Flushing the DNS cache helps Chrome find website servers correctly.
A corrupted DNS cache can lead to delays in loading web pages.
Note: Flushing the DNS cache does not affect your browsing history or saved passwords. It only clears the list of recently resolved domain names.
Restart Modem and Router
Restarting your modem and router can fix many network issues that cause Chrome speed to slow down. This step refreshes your connection to your internet service provider and can clear up temporary glitches. Sometimes, network congestion or packet loss can slow down your connection, and a simple restart helps restore normal speeds.
To restart your modem and router:
Unplug both devices from the power outlet.
Wait at least 30 seconds.
Plug them back in and wait for all lights to return to normal.
Restarting your network equipment is a basic but effective troubleshooting step. It can resolve many issues that affect Chrome speed after a DNS change.
If you use a VPN or proxy, try disconnecting it to see if your speed improves. VPNs and proxies can route your DNS queries through slower servers, which may cause delays.
You should also check if Chrome is using its own DNS-over-HTTPS feature. Sometimes, Chrome may override your system DNS settings, which can impact performance. Make sure your browser settings match your intended DNS configuration.
By following these steps, you can often fix the problem when Chrome speed slows down after changing DNS. If the issue continues, you may need to test alternative DNS servers or look for other network problems.
Fix Chrome Performance
When you notice Chrome running slower than usual, you can take a few steps to boost its performance. These steps focus on clearing caches, resetting network settings, and managing extensions. Each action targets a different cause of browser lag.
Clear Chrome DNS Cache
Clearing the Chrome DNS cache helps your browser resolve website addresses more quickly. Old or corrupted DNS entries can slow down your browsing. When you clear the cache, Chrome fetches fresh information, which can improve speed and reliability.
Here is how clearing the DNS cache can help:
Benefit | Description |
|---|---|
Reduces Latency | Clearing the cache can lead to quicker responses from servers. |
Decreases Server Round Trips | Fewer requests to the DNS server can enhance speed. |
Improves Page Load Times | Faster domain resolution can lead to quicker loading of web pages. |
Tip: Visit
chrome://net-internals/#dnsand select “Clear host cache” to refresh your DNS cache.
Reset Chrome Network Settings
Resetting Chrome’s network settings can resolve hidden issues that affect browsing speed. This step restores default configurations, which helps if you have changed settings or installed software that interferes with your connection. You can reset network settings by going to Chrome’s settings menu and restoring defaults under the advanced network section.
You may also benefit from Chrome’s built-in features like DNS prefetching, resource prefetching, and prerendering. These features help Chrome load pages faster by preparing resources in advance.
Technique | Description | Benefits |
|---|---|---|
DNS Prefetching | Pre-resolves DNS for domains likely to be accessed, reducing latency. | Saves several milliseconds on requests, improving user experience. |
Resource Prefetching | Fetches specific resources ahead of time based on user behavior predictions. | Reduces loading time for critical resources, enhancing site performance. |
Prerendering | Loads and renders an entire page in the background, preparing it for instant access. | Provides instantaneous transitions between pages, significantly improving perceived speed. |
Disable Extensions
Some Chrome extensions can interfere with DNS resolution and slow down your browser. Extensions like ad blockers and VPNs may intercept DNS queries, which can cause errors or delays. If your speed slows down after changing DNS, try disabling extensions to see if performance improves.
Extensions can disrupt DNS resolution and cause errors like DNS_PROBE_STARTED.
They may slow down network requests, making pages load more slowly.
Disabling unnecessary extensions often restores normal browsing speed.
Note: You can manage your extensions by visiting
chrome://extensions/and turning off those you do not need.
By following these steps, you can address many common causes of slow Chrome performance after a DNS change.
Test Alternative DNS Servers
When you notice that your Chrome speed slows down, trying alternative DNS servers can make a big difference. Not all DNS servers work at the same speed. Some respond much faster than others, which helps websites load quickly. You can improve your browsing experience by choosing a reliable and fast DNS provider.
Recommended Fast DNS Options
You have several trusted DNS providers to choose from. These companies focus on speed and reliability. Many users see better performance after switching from their default ISP DNS.
Cloudflare (1.1.1.1) ranks among the fastest DNS services worldwide. DNSPerf currently lists it as number two, just behind DNSFilter.
Google Public DNS (8.8.8.8 and 8.8.4.4) is another popular choice known for quick responses.
DNSFilter also offers high-speed DNS, though it is more common for business use.
Switching to one of these providers can reduce DNS lookup times. For example, Cloudflare often responds in under 12 milliseconds, while many ISP DNS servers take 80-200 milliseconds. Faster DNS means your browser spends less time finding websites, so pages appear sooner.
Switch DNS Servers
You can test which DNS server works best for you by using online tools. These tools measure how quickly different DNS servers respond from your location.
DNSPerf lets you compare the speed and uptime of many DNS services.
DNS Robot provides DNS lookup and benchmarking tools to spot slowdowns.
GRC DNS Benchmark is a Windows tool that tests DNS speed based on your network.
Tip: Try several DNS servers and see which one loads websites the fastest for you.
Switching from your ISP’s DNS to Cloudflare or Google can cut lookup times from over 80ms to under 15ms. This change often leads to faster browsing and better performance, especially if you visit sites with many resources. If you want to see real improvements, use these tools to find the best DNS for your needs.
Check Network and System
When Chrome slows down after a DNS change, you should check your network and system settings. Sometimes, the problem does not come from DNS alone. Your computer’s drivers and security software can also affect browser speed.
Update Network Drivers
Network drivers help your computer talk to the internet. If you use outdated drivers, you may notice slow browsing or connection drops. New drivers often fix bugs and improve speed. You should check for updates if Chrome feels sluggish after a DNS change.
Outdated network drivers can slow down performance.
This slowdown may contribute to browser speed issues.
The exact frequency of this problem after DNS changes is not clear.
To update your network drivers:
Open Device Manager on Windows.
Find “Network adapters” and right-click your adapter.
Select “Update driver” and follow the prompts.
Tip: Restart your computer after updating drivers. This step helps changes take effect.
If you use a Mac, check for system updates in the Apple menu. Updates often include new drivers.
Check Security Software Conflicts
Security software like antivirus or firewalls can block or slow down DNS requests. Sometimes, these programs see new DNS servers as a threat. You may notice Chrome loading slowly if your security software interferes with DNS.
To check for conflicts:
Temporarily disable your antivirus or firewall.
Test Chrome speed with the security software off.
If speed improves, add your DNS server to the software’s safe list.
Security Software | Possible Effect on DNS | Solution |
|---|---|---|
Antivirus | May block DNS queries | Add DNS to safe list |
Firewall | Can slow connections | Allow DNS traffic |
Note: Always turn your security software back on after testing. Keeping your system protected is important.
By updating drivers and checking your security software, you can fix many hidden issues that slow down Chrome after a DNS change.
Restore Defaults
If you still notice slow speeds in Chrome after trying all the previous steps, you may want to restore your settings to their defaults. This action helps you start fresh and removes any changes that might cause problems.
Revert DNS Settings
You can return your DNS settings to their original state. This step often solves speed issues that started after a DNS change. Your device will use the DNS servers from your internet provider, which usually work well for most users.
How to revert DNS settings:
Windows:
Open the Control Panel.
Go to “Network and Sharing Center.”
Click on your network connection.
Select “Properties.”
Double-click “Internet Protocol Version 4 (TCP/IPv4).”
Choose “Obtain DNS server address automatically.”
Click OK.
macOS:
Open “System Settings.”
Click “Network.”
Select your active connection.
Click “Details” or “Advanced.”
Remove any custom DNS entries.
Click OK.
Tip: Restart your computer after changing DNS settings. This step ensures your device uses the new settings.
Reset Chrome to Default
If Chrome still feels slow, you can reset it to its default state. This action removes custom settings, extensions, and temporary data that may slow down your browser. You do not lose your bookmarks or saved passwords.
Steps to reset Chrome:
Open Chrome.
Click the three dots in the top right corner.
Go to “Settings.”
Scroll down and click “Reset settings.”
Select “Restore settings to their original defaults.”
Confirm your choice.
Note: Resetting Chrome can fix many hidden issues. You can always reinstall your favorite extensions later.
A fresh start often brings Chrome back to its best speed. If you follow these steps, you give your browser and network the best chance to work smoothly again.
You can fix most Chrome issues when speed slows down after a DNS change by following a few simple steps. Try reverting DNS to automatic, flush your DNS and Chrome caches, and test different DNS servers. If problems continue, reset Chrome and your DNS settings. For stubborn issues, use Chrome’s built-in malware scanner or review your installed programs for anything suspicious. Restoring default settings gives you a safe way to start fresh.
FAQ
Why does changing DNS slow down Chrome?
You may notice slower speeds because your device needs time to update DNS records. Some DNS servers respond slower than others. Chrome might also cache old DNS data, which can cause delays until you clear it.
How do I know if my DNS change worked?
You can check your DNS settings using ipconfig /all on Windows or your network settings on macOS. You can also use nslookup google.com to see if your device uses the new DNS server.
Can Chrome extensions affect DNS speed?
Yes, some extensions like VPNs or ad blockers can slow down DNS lookups. Try disabling them to see if your browsing speed improves. Extensions may also interfere with Chrome’s network settings.
Is it safe to use public DNS servers?
Most public DNS servers like Google and Cloudflare are safe for everyday use. Always choose well-known providers. Avoid using unknown DNS servers, as they may not protect your privacy or security.
What should I do if nothing fixes Chrome speed?
If you still have issues, reset your DNS and Chrome settings to default. Restart your modem and router. If problems continue, contact your internet provider for help or try using a different device.
