Compared to a similar 6yo [1] and 3yo[2] (by zutty maker) comparisons, VTE terminals still (at least pre-46) bad in latency front. (They're as high as VS Code based beuke article.) Xterm still rules it. (Pointed in [2], this is due to direct rendering via Xlib which comes with the downside of having poor throughput.) Alacritty significantly improved, Konsole got worse. About Alacritty, it's pointed in [2], there were various opened tickets related to its poor performance and wasn't an easy to solve problem. So kudos to Alacritty devs for succeeding and GNOME devs for improving in the new version.

Alacritty, Kitty, Zutty, GNOME, others, quite a rejuvenation in terminal development.

[1]: https://lwn.net/Articles/751763/

[2]: https://tomscii.sig7.se/2021/01/Typing-latency-of-Zutty