Very good news for NEM. The new Catapult technology was tested by third parties and found out to be very fast.
In summary, Catapult was tested on three nodes that were turned off and on to simulate outages. They were spammed over 4000 tx/s. Spam was sent from over 10 million accounts. And everything worked great!
sounds good, but how many accounts were active in this environment? 10 million? sounds also good but should be more (visa has for example >800 million accounts).
the speed should be depending much on the number of accounts and also the length of the transactions stack since go-live, because the database calls will become slower, when the tables are longer...