The other day I was able to click on Ghostty, then open Gnome Terminal, type a command and run it before Ghostty had finished loading.
Namely it is wayland only, cpu rendered, and doesn't have any window decorations
time foot = 0m0.130s
time ghostty = 0m0.242s
112ms difference, and I have GPU acceleration after that.
This is nowhere near "slow", like you stated.
I've just reverted back to using that as it's faster to load and has all the features I need.