I am in the process of getting myself to start using neovim instead of vim/vi which has been favorite editor for over 30 years.
For my current use, I need to set keymapping to type characters that have diacritical marks. These are IAST diacritical marks available as keymapping file iast.vim. The keymapping can be switched by typing set keymapping=iast
The way these keymappings work is you get gīta by literally typing g-ita. Likewise numerous keyboard shortcuts are present in iast.vim
The keyboard mapping works well in vim, but in neovim it works with a caveat. I have to enter the keys really fast to see the diacritical character show up as expected. This is on a Mac. I have experienced the same behavior using iterm2 or alacritty terminal.
Any tips to resolve this?
:h 'timeout'
and all that stuff below. Compare the actual values in both your configs.