Thread:Extension talk:Lucene-search/Searching (spell.Suggest) too slow

I run a very large wiki (250,000 pages) and lucene often takes so long to search that the results page will load without showing any results. A subsequent search will show matches, since the results are in lucene's cache.

The problem seems to be with org.wikimedia.lsearch.spell.Suggest which can take up to 15000 ms to complete.

org.wikimedia.lsearch.search.SearchEngine seems to be ok, returning results in ~100ms. Is there any way to speed up/remove the spelling suggestions to increase speed?