The animations in Workflow Builder are nice to look at.
Like with the animations in Excel: nice, but they add quite a delay!
Is there a trick to disable the animations to speed up the processing ?
If you want to loop the workflow, maybe try saving the script for the workflow and just loop that?
There wouldn't be any animations, plus with a few tweaks you could make tables invisible or private, that speeds things up too.
As a short-term solution, replaced the for via the "Workflow" with a for loop inside a single step (see the example in the original post). This solves my issue. I will encourage all my colleagues to do it the same way.
The difference in is significant - and a bit surprising.