Hey a kota,
If Mendix Studio Pro is slow or says "Not Responding," try these steps: close tabs you don’t need, turn off collaboration in Edit > Preferences, and make sure you are using the latest version. If you're using live SCSS previews, turn them off and build manually instead. Finally, restart the app and delete the deployment folder to clean up. These tips should help make Studio Pro run faster.
Regards
Reemali Patil