https://docs.nano.org/what-is-nano/overview/ https://docs.nano.org/what-is-nano/overview/ > Every block must also contain a small, user-generated Proof-of-Work

https://docs.nano.org/what-is-nano/overview/ https://docs.nano.org/what-is-nano/overview/ > Every block must also contain a small, user-generated Proof-of-Work value which is a Quality-of-Service prioritization mechanism allowing occasional, average user transactions to process quickly and consistently. The PoW computation for a transaction typically takes a few seconds on a modern desktop CPU. Seems to me like this hasn't changed anything.