>What you may notice with your current system is that it is relatively fast until someone modifies the table(s) you are using and then performance dives.
>
>I dont know why this is.
OS-level buffering, perhaps?
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)