I use ChatGPT every day for long work sessions. At some point my chats just started dying on me. Typing would lag, scrolling would freeze, and eventually the whole tab crashed.

Turns out ChatGPT loads every single message in your conversation into the browser at once. If you have a long chat your browser is basically trying to juggle thousands of things at the same time. It has nothing to do with your internet or your computer being slow.

So I built a fix. It removes old messages before your browser even sees them. Your browser only loads the recent part of the conversation and runs fast from the start. Your full chat history is never deleted, you can scroll back anytime with one click.

On a really long chat it runs 932 times faster. I measured this.