Solana mainnet slots switched to 200 ms on October 9. Turning the metronome up a notch does mean blocks arrive more frequently, but translating that directly into “double the TPS” is like speeding up a treadmill and assuming people will automatically lose weight—that’s not how the math works. What developers should check right away is the blockhash: its validity period is still 150 blocks, which at a 200 ms cadence works out to about 30 seconds, down from about 60 seconds. If hardware wallets, multisigs, or manual reviews are still working with the old timing assumptions, a transaction could expire before the signature makes it through. Shorter slots also narrow the window in which a single leader can control block ordering consecutively, but MEV and sandwich attacks won’t disappear automatically. What matters next, more than the neat “200 ms” figure, is the skip rate, voting latency, and the actual confirmation experience in applications. In short: the on-chain pace has picked up, but don’t automatically double every performance metric. Wallets and developers should recalibrate their timers, too. The accompanying image is an AI-generated concept illustration, not a screenshot of live market conditions or network data. $SOL #Solana #On-ChainTechnology