I've been using Gnome for years and am currently on Gnome 46. I hadn't noticed any difference in the terminal latency from Gnome 45. Like you, I think I just don't notice these things.
I'm on Gnome, and I moved from Gnome Console to Wezterm because of the latency. It wasn't noticeable when I used terminal as a small window, but most of the time my terminal was fullscreen, and the delay was unbearable.
