Hi LangGraph team, I opened a GitHub issue here with the full details: Thread copy endpoint can take 12+ minutes with no async/progress or shallow-copy option · Issue #7859 · langchain-ai/langgraph · GitHub We use LangGraph (on a LangSmith US deploy) Platform’s thread copy endpoint: POST /threads/{thread_id}/copy to power a user-facing “fork chat” feature. For large conversations, we observed this call taking over 12 minutes. I understand that a full thread copy may need to copy checkpoint ...