85 tests and nearly 300 assertions in under a minute is still orders of magnitude faster than what I see elsewhere. There isn’t a single magic bullet performance killer. Extreme performance comes from absolutely everything: faster approach to testing, better hardware, super fast application to test, faster transmission, faster reporting and assertions, and everything else.

You can’t know what’s faster unless you are measuring things in isolation and making incremental improvements to a bunch of different bottlenecks. For example people love to tell me how fast their framework, their application, or whatever is but it’s clear that these are almost always anecdotal observations that are not measured or compared to anything.

When looking at performance it does not matter how fast something is, which makes anecdotal observations worthless. The only thing that matters is the difference in speed between things compared, the performance gap.