Gvim loading slowly when used with FileZilla

I learned emacs and vim briefly, so I wanted to start using it with everything, especially FileZilla, which is where I do a lot of coding.

I installed Gvim, since logging into the server through the terminal, and editing files directly with vim was too cumbersome (you needed to manually download a file, edit it, then upload it all in the terminal..)

I had this as my default editor:


And files were taking 5-10 seconds to load after they were downloaded from the server.. 
I changed it to:

/usr/bin/gvim -f

And it fixed it (for some reason)