[RubyPinch]

As far as Alacritty is concerned, modularity can easily come with a cost.

once you add in e.g. tmux for multiplexing and scrollback, then you are bottlenecked at tmux's speeds, as opposed to the terminal emulator's speeds (not like it really matters, but its an interesting effect)

[Johnny_Brahms]

That will be interesting for the tmux (or do we go all the way to nurses??) developers, because tmux has probably always been way faster than any terminal emulator it has been running in.

Where will the bottleneck be?

[RubyPinch]

I ain't too sure, but

https://www.reddit.com/r/programming/comments/5mflek/alacrit... The Terminology (another light-weight term, with memory goals, that has scrollback) developer's comments are here