The BLU-97 still fly away. It's almost imposible to use. The AGM-154A goes to the point were it was designated correctly, the problem are the BLU-97 which the wind take them away from the target.
The only way to use them is upwind or downwind which is crazy, the mission may prevent you from doing that. And imagine if you need to determine the wind 30nm away.
Is the most unreliable weapon in DCS.
With a friend we tried to use the meterstic and se the deviation and we tried to make a table, but its very hard to do so precisely so we didn't bother anymore.