So you're saying it can use high performance cores for JS, but very rarely?Safari likely uses high-performance cores for stuff like JS. It might force stuff like downloads to run on efficiency cores, though.
JS is largely single-threaded, so you benefit more from very fast cores (which the M1 has), not many cores (since only one will truly be busy).
Also, 32 GiB RAM is way overkill for Safari.
I thought 16gb (and 8 and 4 and so on) was over kill just as an internet machine. My Facebook tab is taking over 1.5 gb right now and I havent opened it for an hour or 2. I have some live view tabs that are very heavy RAM usage and then a ton of others too. I almost always have swap going on with just Safari on my 16gb machine, and I've read all the issues with swap issues on M1 machines so I figure I'll play it safe and over buy Ram...again lol