It looks like nostr-sdk automatically runs negentropy sync when relays are added. I think this causes a bottleneck in my app and creates significant delays. My app flow works like this: 1. Users launch the app 2. The app connects to bootstrap relays 3. The app gets the user's relay list and verifies its existence 4. If the relay list exists → Get profile → Get and verify messaging relays The flow is simple and runs step by step, so I don't think the backend affects it much. If I disable gossip, it runs fine.