Practical Byzantine Fault Tolerance is usually a consensus algorithm released during the late 90s by Barbara Liskov and Miguel Castro. pBFT was designed to work successfully in asynchronous(no upper bound on when the reaction towards the request will be been given) methods. It is actually optimized for minimal overhead https://financefeeds.com/solana-optimizes-for-speed-but-lightchain-ai-optimizes-the-entire-developer-journey-for-real-ai-usage/