[trinix912]

It's also that software back in the day was much more fine-tuned to use the very limited resources as well as possible, so getting a better CPU would visibly speed up things.

Somewhere in the late 2000s, the CPUs got powerful and cheap enough (in the sense of "cents per MHz") that it shifted from having to be creative to get your programs to perform at acceptable speed, to not having to and instead focusing on delivering marketable software faster.

The only thing nowadays I can imagine requiring a substantial amount of raw processing power would be on-device AI processing, but that doesn't seem to be the case here, as large parts of the processing is still done in the cloud.

[Zak]

Editing high-resolution video comes to mind as an example of something that will still stress most PCs. Being able to scrub through footage and preview the effect of edits in real time without using low-res proxy files demands a lot of performance. I think higher-spec modern PCs are there for 4K, but I'm not sure about higher.