I got an M5 and it unfortunately had Tahoe preinstalled. Out of the box, Quicklook is choppy. My non-Tahoe M1 is buttery smooth. I don't know how Apple managed to ruin a feature that's been running smoothly for decades.

Yikes. That’s terrible (it’s a great feature[+]).

[+]just discovered this, thanks Sindre who I always run into searching: https://github.com/sindresorhus/quick-look-plugins

(but I’m on Sequoia so they work perfectly!)

Anecdotally, I’ve had Tahoe installed for ages now and it runs perfectly smooth on my M1 Pro with an external 4k display as well.

I run a terminal, emacs, and firefox. That's about all I need to work/develop, and I've not noticed anything negative since the upgrade.

I guess I'm not a power-user though.

Same for me on a standard M1. The UI is degraded though.

Yeah they should have bought the M5 Pro /s