set noswapfileIf you are a single user on your system, you probably don't need swap files.
set lazyredrawWhen this option is set, the screen will not be redrawn while executing macros, registers and other commands that have not been typed.
set shada=NONE(NeoVim) or
set viminfo=NONE(Vanilla Vim) The shada or viminfo file is used to store a lot of things like command line history, marks, input-line history, search history. Disabling this for real dev work won't be a wise choice but it can be a life-saver if you are using Vim over SSH.