167 tx/s is very fast for the current blockchain confirmation speed, and if it is based on decentraland, I think SEM will be a great change.
That's a great achievement, but just the tip of the iceberg for Semux.
Just above (in this thread) the semux dev confirmed Semux can handle 10,000 txs/block, but they have just limited it to 5,000 for now.
https://bitcointalk.org/index.php?topic=2159012.msg26798734#msg26798734Semux == game changer