Paren Matching Slow

[orbisvicis]

Renders all navigation abominably slow. Workaround is to use :NoMatchParen. This seems unrelated to other general syntax performance issues and the following specific settings:

• relativenumber
• cursorline
• cursorcolumn
• colorcolumn
• g:haskell_conceal
• g:haskell_quasi
• g:haskell_interpolation
• g:haskell_regex
• g:haskell_jmacro
• g:haskell_shqq
• g:haskell_sql
• g:haskell_json
• g:haskell_xml
• g:haskell_hsp
• g:haskell_tabular

Can there be a workaround without disabling paren matching? After all, paren/brace/bracket highlighting is identical with/without vim2hs, and matching is no different either.