C.Thank you for this. I had a similar experience with an earlier M-processor machine, where the Tame Apple Press were reporting it was clearly a million times faster than any x86 machine etc etc, I got one for a very specific purpose, and ...
It was slow. Not just "not a million times faster than an equivalent x86", but actually noticeably slower than an x86 machine that cost half as much (and came with four times as much storage, but that's another Apple gripe).