It’s certainly all about the file “state.vscdb” which handle the entire composer state (history, conversation, parameters and so on). When it take over >100Mo , Cursor freeze and lag
You have to delete this file and restart cursor… BUT you loose your conversations and history.
I do not understand why devs don’t want to part this file for Cursor not having to read it all every time.
In Cursor’s globalStorage folder :
C:\Users"username"\AppData\Roaming\Cursor\User\globalStorage\
Edit : Sorry, i’m on v0.44.11 i don’t know if folder structure and state.vscdb still exists on last version