[Feature request]I know it might lots of work, but is it possible to build the program in C++/C to improve performance?

[aaabbbdsdsds]

This is a feature request, might be

Ahhhh, well I am a C++ developer, that's why I am wondering if it's possible

[0x7c13]

Replacing the underline text edit component with a better one is the way to go if that's what you wish for. Like: scintilla