BNB Chain quantum upgrade test cuts BSC throughput as blocks grow toward 2 MB

BNB Chain completed a live post-quantum migration experiment on BSC, adding ML-DSA-44 signatures and pqSTARK aggregation while keeping wallets, SDKs, RPCs, and address compatibility intact. Under production-like conditions, native transfer throughput fell nearly 40% (4,973 TPS to 2,997 TPS), gas throughput dropped about 50%, and block sizes expanded almost 18x toward ~2 MB, highlighting scalability tradeoffs.