Slow Windows 11 | All Browsers

Modern browsers default to encrypted DNS (DoH) for privacy. Windows 11 also has its own DoH settings. When both are active simultaneously, they can fight over requests, causing intermittent delays of 1–3 seconds per page load. This feels like a “slow browser” even when your internet speed is fine.

Windows 11 is not inherently slow for browsing, but its default security, power, and graphics settings are often misaligned with how modern browsers work. The good news is that with 15 minutes of tweaking—disabling Memory Integrity, fixing DNS conflicts, and turning off Efficiency Mode—you can restore full speed.

Go to Settings > Privacy & Security > Windows Security > Device Security > Core isolation details . Toggle Memory integrity to Off and restart your PC. all browsers slow windows 11

★★★☆☆ (For the out-of-box experience)

Windows 11 enables several security features by default on new PCs and clean installs. One of the heaviest is (part of VBS). While it protects against malware, it introduces a performance penalty—especially for applications that constantly allocate and deallocate memory, like web browsers. Studies have shown VBS can reduce browser performance by 5–10%, and even more on older CPUs. Modern browsers default to encrypted DNS (DoH) for privacy

The saga of the "Great Browser Sludge" began on a Tuesday morning, right after a sleek Windows 11 cumulative update finished installing. Suddenly, my once-zippy machine started acting like it was wading through molasses . The Descent into Slowness Whether it was Chrome, Firefox, or even the native Microsoft Edge, web pages that used to snap into view were now stuck behind an endless spinning circle. It felt as though every tab was a heavyweight contender, and my RAM was the exhausted referee. I even wondered if my PC was being [rerouted through a distant VPN](microsoft.com because of how disconnected the mouse clicks felt. The Turning Point I finally decided to take back control. Following the advice from seasoned tech enthusiasts and Microsoft Support , I started a systematic "cleansing" of the system. 13 sites Why Is Windows 11 So Slow & Unresponsive?! (A Guide/List of ... It's LAGGY, BUGGY, GLITCHY, NON-RESPONSIVE, and BEHAVES AS IF STILL IN BETA TESTING! The UI responsiveness is horrendous. The Wind... Microsoft Learn All Browser are slow, webpages won't load and video streaming ... 12 Feb 2026 —

Settings > Network & internet > Wi-Fi (or Ethernet) > Hardware properties . Edit DNS server assignment and enter the addresses above. 4. Optimize System Resource Usage This feels like a “slow browser” even when

If you’ve noticed that all browsers—not just one—are sluggish on Windows 11, you’re not alone. The good news? The problem is rarely the browsers themselves. Instead, it’s almost always a conflict between the browsers and Windows 11’s specific settings, drivers, or background processes.