IMPORTANT: Cursor lag & unresponsiveness (AI works ok)

[bconnorwhite (Connor White)]

This is likely due to terminal tool rendering:

Why Cursor Lags (and how to fix)

Describe the Bug As many other posts have noted Cursor can be extremely laggy when the chat window is open (often 50-100ms frames). I think this is mostly due to how Cursor renders terminal tool call output (although the chat window seems laggier than it needs to be in general so I could see this being a broader issue on different hardware). Steps to Reproduce In my experience the lag becomes noticeable in chats with terminal tool calls, even if the chat has a small number of turns. Empty chat…