Lately, on-chain data has been "hanging" all the time, and many people’s first reaction is to blame the smart contract for being slow. In fact, it's often the indexer/Subgraph or RPC acting up. When you open the chart, the front end is either waiting for the subgraph to scan through the blocks before returning results, or the RPC is rate-limited with a 429 error, making the page seem like it's frozen... To put it simply, it's not that the chain isn't producing blocks, but that the data pipeline you're using is clogged.

What’s even more annoying is that MEV/ordering fairness has recently been criticized by retail investors. When the on-chain activity suddenly heats up, validators/builders are busy snatching order placements, increasing node pressure, and public RPCs are more likely to queue up. Anyway, now I tend to open two data sources for comparison: one reads directly from the contract/event logs, and the other uses an indexer; before placing an order, I’d rather wait ten seconds longer to confirm the price feed and update time than get "stuck" and fall into a trap.