I made a fix for ChatGPT Freezing / lagging in long chats
By Holidays in Europe / November 27, 2025 / No Comments / Uncategorized
How to Fix ChatGPT Freezing and Lagging in Long Conversations
If you’ve experienced slowdown or freezing during extended ChatGPT sessions, you’re not alone. Many users, myself included, have faced issues where lengthy chat threads—those with 30 or more messages—become sluggish, with scrolling lag, increased CPU usage, or even the browser tab freezing altogether. While starting fresh is a common workaround, it disrupts ongoing workflows, especially during coding or research tasks, and isn’t an ideal solution.
Understanding the Root Cause
The culprit behind this performance bottleneck is surprisingly simple. ChatGPT’s web interface renders every message in the conversation into the DOM (Document Object Model), and it retains all these message elements indefinitely. Over time, as the chat history grows, the browser’s memory consumption balloons, causing significant slowdown and instability.
A Practical Solution: Lazy Loading Conversation Messages
To address this issue, I developed a lightweight, free Chrome extension that optimizes how ChatGPT loads and displays messages. Instead of rendering the entire chat history at once, this extension intelligently displays only the messages currently visible on your screen. As you scroll, it dynamically loads older and newer messages, ensuring smooth performance without sacrificing access to the complete conversation history.
Key Features:
- Renders only on-screen messages, reducing DOM size
- Loads messages dynamically during scrolling
- Preserves full chat history behind the scenes
- Easy to install and use
Get It Now – Chrome Web Store
The extension is now officially available in the Chrome Web Store, with version 1.0 recently approved by Google. You can download it for free here:
Download ChatGPT Lag Fix Extension
Open-Source & Community
For those interested in the technical details or contributing to the project, the extension’s source code is openly hosted on GitHub. Your stars and feedback are greatly appreciated!
Final Thoughts
This simple yet effective extension can significantly improve your experience with ChatGPT during long conversations by preventing lag and freezing issues. It’s designed to be lightweight, user-friendly, and open for community improvement. If you often work with extensive chat histories, I highly recommend giving it a try!
Happy chatting!