Claude Degraded Performance: How to Fix Slow Responses

What Causes Degraded Performance in Claude?

Degraded performance in Claude typically manifests as unusually long response times, delayed interface loading, messages hanging mid-sentence, or temporary network timeouts. This degradation can stem from two distinct sources: server-side capacity limits on Anthropic's network, or client-side bottlenecks related to browser memory, excessively long chat histories, and network configurations.

When Anthropic's servers are under high load, they dynamically throttle computing resources, causing latency to spike. Similarly, when a single chat thread on the web app becomes too long, your browser must process megabytes of historical context on every turn, severely degrading local rendering performance.

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Steps to Resolve Slow Response Times and Lag

If Claude is responding slowly or acting unresponsive, execute the following troubleshooting steps to isolate and resolve the bottleneck.

1. Check for Active Service Degradation First, rule out a global backend slowdown by checking official channels. * Open a browser tab and navigate to `status.anthropic.com`. * Look at the historical uptime chart and current incident log. Pay close attention to any mention of "Degraded Performance," "Increased Latency," or "High Error Rates." * If the status page confirms an active performance incident, wait for Anthropic to allocate additional computing resources. Performance will return to normal once the incident is marked as resolved.

2. Start a New Chat Thread The Claude web interface sends your entire visible chat history to the model with every new prompt. As a conversation grows, the prompt size grows exponentially. This requires massive computational time for Claude to process and causes significant interface lag. * Click the **New Chat** button in the top-left corner of the screen. * Copy only the vital context or summaries from your previous chat and paste them into the fresh thread. * Limit your use of large file attachments (such as large PDFs, codebases, or high-resolution images) in long, ongoing conversations. Upload files only when active analysis is required, and start new threads once that analysis is complete.

3. Clear Local Storage and Browser Cache Corrupted local cache files can interfere with the WebSocket connections that Claude uses to stream responses in real-time, resulting in severe interface stuttering. * On Google Chrome or Microsoft Edge, press `Ctrl + Shift + Delete` (Windows) or `Cmd + Shift + Delete` (Mac) to open the clear browsing data window. * Select **Cached images and files** and **Cookies and other site data**. * Set the time range to "Last 24 hours" or "All time," then click **Clear data**. * Reload `claude.ai` and log back in.

4. Turn Off Interfering Browser Extensions Extensions that actively scan or modify page contents in real-time can choke the streaming API responses from Claude. * Open an **Incognito** or **Private Browsing** window where extensions are disabled by default. * Log into your Claude account and attempt to send a message. * If the response streams smoothly, one of your active extensions is causing the lag. Common culprits include ad blockers, third-party grammar checkers, translation tools, and external AI sidebar assistants. Disable these extensions on the `claude.ai` domain.

5. Disable VPNs and Check Network Latency Claude utilizes high-frequency WebSockets to stream token generation. Virtual Private Networks (VPNs) or secure web gateways can introduce high packet routing latency, which degrades the perceived speed of Claude's output. * Temporarily disconnect your VPN or proxy server. * If on a corporate network, switch to a standard mobile hotspot or home network to test if custom firewall deep-packet inspection is delaying Claude's response streams.

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When to Escalate

If you are a Claude Pro or Team plan subscriber and continue to experience severe performance degradation—such as messages regularly taking over 60 seconds to begin streaming—while the official status page shows all systems operational, you should file a report.

To escalate the issue: 1. Click your profile avatar in the bottom-left corner of the Claude interface. 2. Select Support & Feedback. 3. Take a screenshot of your browser's Developer Tools Console (F12 > Console tab) showing any red connection or latency warning logs, and attach it to your support message to help the engineering team diagnose localized routing paths.