Is it possible to increase cursor move speed when holding down (h/j/k/l) ? If so, how?
It is impossible to do from within vim or gvim. That is what operating system does for all keypresses (I doubt you can separately increase it only for specific keypresses)
For OSX or linux there should be similar settings.
I would suggest to use more navigation facilities vim has:
/funcname<CR>nnnsearch if you know specific function
}goto next paragraph
C-fscroll page down
C-dscroll half a page down
tag *func*name<tab>if you have tags
Lto go to top, middle and bottom of the screen
- plugin easymotion
- ... many more
As a bit of a frame-challenge, consider learning some more
:help motion (the full list is long; take it slow!).
Some particular useful ones:
?, along with shortcuts
- scrolling Ctrl and any of
- moving in a line
- various text-object motions
As a bonus, these motions combine orthogonally with operators, so you get a 2-for-1: faster movement and faster editing when you need it.