“Apple II Forever” indeed…

https://www.inkandswitch.com/slow-software/

@siracusa We measured MBP 2021 (120 Hz) at ~40ms. 100ms sounds way too much for 2014 MBP https://late-mate.com/old/updates/003/update-003
Late Mate — Measure latency from keypress to the screen

Portable universal latency measurement device — from keypress to the screen

Late Mate
@nikitonsky @siracusa I imagine this is skipping both the keyboard matrix scanning and maybe also using a more typical (slower) word processor as software, although the delta is still too large to explain both I think?