Lately, on-chain data keeps "hanging," but don't rush to blame the project team for running away... Many times, it's the indexer/Subgraph catching up with blocks, or RPC being rate-limited. The moment you open the market data, the frontend is actually requesting data from several services: some use cache, some need to fetch event logs in real-time. When nodes are busy, or you make too many requests, or a public RPC service has issues, you'll get the illusion of "just fine a moment ago, but now it's empty after refresh." The most annoying thing when watching the order book for a long time is the slippage, and thinking you're seeing things because the price suddenly jumps.

Is the chain itself slow?
No, it's more about the path you're taking to get the data being blocked.

Recently, AI Agents and automated trading have been quite popular, with narratives flying everywhere. But those who are truly security-conscious will first set up RPC backups, implement rate limiting and retries, and clarify data source reconciliation... Otherwise, when the bot runs, a single hiccup can send you straight into a liquidity trap. Anyway, I now prefer to verify the same data from at least two sources—better slow than being fooled by "fake empty positions/fake trades."