alt Hacker NewsI'm also on Emacs and Niri, seems to be a popular combo, and I don't have any performance problem.
At home I'm driving an Ultrawide (3440x1440@75Hz) at scale 1.1.
At work I'm driving two 4k screens at scale 1.2.
I might be less sensitive to latency but it could also be a graphics driver issue or something similar. I'm using Arch with emacs-wayland (pgtk) with a strix halo (all AMD) laptop.
It might also just be the case that the hardware you have is good enough that the lag isn't noticable.
You should still be able to notice a spike in CPU usage whenever you force Emacs to redraw the frame by typing into it though.