自2008 R2以来，是否有任何Sql Server全文搜索（FTS）性能改进？

we're using SQL Server 2008 R2 Full-Text Search over a table with 2.6 million records. The search performance often is poor, it follows the commonly reported pattern: cold system/first run ~10+ sec, subsequent runs ~1-2 sec. This is inline with results reported in the following article dated of Feb, 2013: we're using SQL Server 2008 R2 Full-Text Search