Thanks Grahal,

It’s a good idea, the problem is there is not always only one good value for a variable, and a variable must be interpret with others (Tht’s why the best combinaison is generally not the first in the results)

For example on this 3D view if we choose the best value for A, it’s between 10 and 30 approximatively (yellow rectangle)

BUT, if we do that, we loose all good value for value B when the variable A is between 60 and 98  (blue rectangle)

So I think it’s a good idea, but we can loose some good results

I think the best is to have a big step and reduce it step by step

It seems that this sunday morning PRT servers are fasters than this week, yipikae !