Today, I encountered that kind of "sudden lag" again while checking on-chain data, so I closed the market page to avoid being driven by emotions... Honestly, many times it's not that the chain has stopped, but that the data pipeline is clogged. Front-end usually doesn't read directly from the chain, but rather goes through indexers / Subgraphs—things that "organize on-chain data into shelves"—which are slow to process, so what you see is also slow; plus, with RPC rate limiting, especially during peak times when requests pile up, it gets throttled, resulting in loading spinners and delays in balances / transaction history. Recently, modularization and the DAO layer narrative have been quite popular, developers are talking excitedly, but if user experience still frequently stutters, it's really hard to get people to actually use it. Anyway, when I see delays now, I first check two data sources, rather than chasing the fluctuations of that one second.