" From https://github.com/vimwiki/vimwiki/pull/601
$ gvim -u NONE -U NONE -N -i NONE
<commands below can be copied to clipboard and run with `:@+`>
set nocompatible
filetype plugin on
syntax on
let g:vimwiki_camel_case = 0  " Don't make links from CamelCased words
let g:vimwiki_table_auto_fmt = 0 " Turn off table auto-formatting
let g:vimwiki_autowriteall = 0
let g:vimwiki_folding = 'expr:quick'    " Enable folding.
let &rtp.=',~/.vim/bundle/vimwiki'
source ~/.vim/bundle/vimwiki/plugin/vimwiki.vim
e ~/tmp/delay.wiki
normal! 50%
normal! zozo
tabe
let start = reltime() | tabprev | redraw | echom reltimestr(reltime(start))
" >>> expected: less than 0.5 seconds