Despite the fact that crypto transfers work almost instantly, all the blockchains have different time to generate blocks and push the transactions in. Besides the specifications of a taken network, transaction speed can be influenced by:
The network being “busy” at the moment
Large transfer volume
Increased fees
Problems with nodes
https://swapzone.io/learn/how-to-exchange-crypto-fast/That is a good tool but I do not think people normally try to find out that blockchain is fast or slow when they are doing any transaction. People use higher fees to do their transactions faster.