Hi,
Thank you for your question and I am sorry about the experience!
I believe, as Moonlight suggested, the vine object generated large number of polygons, therefore, it may significantly slow the project down. If you need to have a more thorough investigation, would it be possible for you to share the object for a closer look? Let me know here in the thread or by Private Message if you need a secure link to forward the file!
Looking forward to hearing from you soon!
Best regards,
Minh
Minh Nguyen
Technical Support Engineer
GRAPHISOFT