ChatGPT typing lag in long chats — needs virtual scroll like, yesterday

Thanks for acknowledging the issue. However this should probably be treated as more than a minor UX friction. ChatGPT is fundamentally a productivity tool. UI latency directly reduces user productivity, especially during typing where any lag breaks flow. From the outside it appears that large conversations cause the UI to render and maintain an increasingly large DOM tree, which leads to expensive layout recalculations and input lag over time. Virtualized list rendering (windowing) is a standard solution for long lists in modern UI architectures and is widely used to keep UI latency constant regardless of list size. Because this issue directly affects typing responsiveness — one of the most critical interaction loops in the product — leaving it unresolved creates a contradiction between the product’s goal (productivity) and the actual user experience. For that reason this likely deserves treatment as a priority performance defect rather than just a UX improvement.