• What method did you use to port the database?

    Remember to use a schema comparison tool to insure things like indexes, table options, statistics, constraints, plan guides, etc. are all the same before attempting a baseline comparison. Also the method used to copy table data to the new instance (if that's the case) could have resulted in fragmentation.

    "Do not seek to follow in the footsteps of the wise. Instead, seek what they sought." - Matsuo Basho