claude website lagging while typing

When conversations with Claude grow long, the web interface can begin to lag significantly. You might type a sentence and wait several seconds for the characters to appear on the screen. This input delay is usually caused by the browser's main thread struggling to parse massive markdown structures and render syntax highlighting in real time.

If the site freezes entirely, you can troubleshoot the issue with our guide on what to do when Claude is not responding.

Start a fresh conversation tab

The most effective fix for typing lag is to archive your current conversation and start a new one. Claude loads the entire chat history of your active window into your browser's active memory to maintain context. If you have a chat containing thousands of words of code or text, your browser must continuously re-render that data with every keystroke. Starting a new thread instantly frees up system resources.

Turn on hardware acceleration in your browser

If your browser is not using your computer's graphics card to render the website's dynamic layout, the entire processing load falls on your CPU. This causes severe typing latency. In Chrome, Edge, or Brave, go to Settings, search for "Hardware Acceleration", and toggle "Use graphics acceleration when available" to the on position. Relaunch your browser to apply the changes.

Disable real-time spellcheckers and writing assistants

Browser extensions like Grammarly, LanguageTool, or even built-in browser spellcheckers scan input boxes in real time. When you type in Claude's text area, these extensions analyse your input dynamically, which can cause massive delays in long threads. Whitelist claude.ai inside your writing assistant's settings or turn off real-time page scanning.

Clear excessive browser memory cache

If you keep Claude open in a tab for days, memory leaks can cause the browser process to bloat. Press Shift + Esc (on Windows Chrome) or open your system task manager to see how much RAM the Claude tab is consuming. If it exceeds several hundred megabytes, clear your browser cache and refresh the tab. Heavy active scripts can also prevent the main dashboard from opening; check out how to fix a Claude app won't load error if the lag turns into a complete crash.