[ska]

There is often no real value in optimizing such code, if the computation finishes in a time that doesn’t mess with your workflow. Spending more time on it will often just take time away from something more valuable to the research.

[KeplerBoy]

Ahh yes, that's a good point. If you're, for example working in a Jupyter Notebook, it absolutely doesn't matter if a cell needs 3 seconds or 3 milliseconds to execute.