Fixes an annoying bug where Vim searches through the runtime path for ages for HTML syntax files

html.vim

" Fixes runtimepath issues for html files
" Language:	HTML
" Author:	Rob O'Dwyer
" Last Change:	April 2, 2011
" Filenames:	*.html, *.htm

" Quit when a syntax file was already loaded
if exists("b:current_syntax")
    echo "Warning: html syntax has been overridden!"
    finish
endif

" Deactivate extra stuff on runtimepath
let s:oldrtp=&runtimepath
set runtimepath=$VIMRUNTIME

" Source default html syntax file
runtime syntax/html.vim

" Restore runtimepath
let &runtimepath=s:oldrtp

" Prevent other syntax files from loading
let b:current_syntax='html'

Thanks for this. It seems to be working for my HTML files now, but I'm getting the same problems with other file types (CSS, JS, phtml...).

are you using the css_color plugin? I found that was another source of slow loading for my setup, so I removed it.

yes, i was, I've switched to a newer fork of it though and it's a lot faster. https://github.com/ap/vim-css-color