Hey, thanks for the report. The issue with IDE freezing when using AI Chat in version 2.2.20 is a known problem for the 2.2.x release.
Similar reports: Since the latest update (approx Dec 11/12), the editor has become extremely laggy - many users are reporting lags and freezes after updating to 2.2.x.
The team is investigating the issue in 2.2.x. Please follow forum updates.