Binance's BNB Chain (BSC) has successfully conducted a test of quantum-resistant cryptography, but the results revealed a significant trade-off: a 40% reduction in transaction throughput. The test involved replacing the widely used ECDSA and BLS12-381 cryptographic systems with quantum-safe alternatives, causing typical transaction sizes to increase from approximately 110 bytes to 2.5 kilobytes. This change resulted in a decline in throughput from 4,973 transactions per second to 2,997, primarily due to the increased data load on the network. While the underlying systems for validators managed to adapt efficiently, user transactions suffered as each now required a larger digital signature. Other major blockchains, including Bitcoin and Ethereum, are also pursuing quantum security, but with varying approaches. Bitcoin developers are considering long-term upgrades, while Ethereum is gradually enhancing its infrastructure. In contrast, TRON is moving quickly, with plans for a quantum-resistant testnet and mainnet rollout later this year. BSC's experiment underscores the ongoing challenge in the crypto industry: balancing enhanced security against potential losses in speed and efficiency.