The Alteryx engine is known for being fast. I would like to think that the processing engine is as fast or faster than any other data engine out there. I learned how to program on a computer with 16 KB of memory and a 2 MHz 8 bit CPU. Learning how to program in an environment like that forces you to learn how to count bits and clock cycles. Taking that mentality and applying it to a modern computer leads to very quick processing.
The difficulty though is that Alteryx is limited to the speed it can read & write data from where it is stored. Having a super fast data processing engine doesn’t help if you have to pull a terabyte of data from a data warehouse only to find a subset of it and produce a report. It doesn’t help to be fast if it is slow to get the needed data.