I am surprised to see nobody has posted a link to Dan Luu's article about benchmarking terminal emulator latency:

https://danluu.com/term-latency/

For me, one of the takeaways from this is that time taken to cat a large file is a poor benchmark of a terminal emulator.

This article also includes a nice demonstration of yet another application of Rust - as an easily reproducible and highly reliable way to load your machine so hard it interferes with your terminal.