Optimism is speeding up OP Mainnet subblocks to 200 ms. But four fields in the raw stream will now return zeros or an empty list. That matters because the payload still parses normally, so software that assumes those fields are valid may never flag the change. https://cryptoslate.com/optimism-is-pushing-network-speeds-to-200-milliseconds-but-standard-data-feeds-are-quietly-dropping-key-information/(CryptoSlate)