Always ensure you are using the latest version of Blender for the best performance with Pupa V2.
the Pupa_Version_2_vfxmed.zip file using the link provided. Open Blender and go to Edit > Preferences > Add-ons . Click Install and select the downloaded .zip file. Download File Pupa Version 2 vfxmed.zip
Enable the add-on by checking the box next to . Always ensure you are using the latest version