I took the test and I scored more than 145 in all the cathegories except computational speed where I scored 66.
Honestly an average of 147 (without computational speed) is really too much, It's clear that the result is studied to be high so people are satisfied. ( i scored 140 with the 66, and it's super high as well).
Btw 66 in computational speed means that I'm completely $#*!ed with numbers, I'm a master student in mathematics: i'm not so fast with computations but i'm pretty sure im better than the average.
To conclude: it's a random test, dont take it.
Your Computational Speed Score does not mean that you are bad with numbers. It means that you are slow. The Computational Speed Score is a measure of how long it took you to complete the test. That is all.