Hey, thanks for the report. This is a known issue with version 2.2.x - several users have reported AI chat freezes and performance problems:
- Cursor IDE Keeps on Hanging-up
- Since the latest update (approx Dec 11/12), the editor has become extremely laggy
The team is working on a fix. For now, I recommend staying on the stable 2.1.x release, as you already did. Please keep an eye on forum updates.