For 1), aren’t there two gpu-based terminal emulators on that list with under 16ms latency on a 60Hz display. I think that should mean less than one frame but I don’t really understand the lack of variance in the measurements. I think if reported latencies are very low, the software methodology doesn’t work so well.
The only other GPU accelerated one I see is Kitty. Current Alacritty numbers are closer to Kitty than rxvt.
Kitty statically renders at 100hz, thus skews numbers a bit; however, this also proves all this guy measured was "time to next frame", not actual performance numbers.
in the ideal case where every keystroke shows up in the next frame you should get an average of 8.3ms on a 60hz display, with a range from 0 (i did say this was ideal) to 16.7ms
Am I missing something?