Is There a Theoretical “Optimal” Block Time to Minimize MEV without Sacrificing Security?

There is no single theoretical "optimal" block time. Shorter block times reduce the window for MEV calculation but can increase the risk of network instability and orphan blocks, which compromises security.

The optimal time is a trade-off that balances low latency (for user experience and MEV reduction) with the need for high security and network finality. Modern protocols focus more on architectural solutions (like PBS or private mempools) rather than just adjusting block time.