> which takes ~180sec for my iPhone 17 to solve at ~100KH/s

> so I really don't see why Safari on a modern iPhone should be so slow at this

FWIW, my iPhone 12 Mini also does ~110KH/s with Anubis on lists.ffmpeg.org, so seems fairly likely that Safari somehow here isn't working as expected.

iPhone Air is roughly 90KH/s. I bet it’s a matter of the site not being “trusted” and the JIT being disabled.

Apple dynamically disables JIT based on website trust?

GP is probably running in lockdown mode.

My 13 mini is getting similar results, no lockdown. Something else is going on.