If using "Keep only strategies that fit conditions below" in "Rankings" and putting some settings there like "at least 2000 trades", etc., it wrongly applies to theĀ initial generation of the "Genetic evolution" ("Build Mode") too, even I do NOT have selected "Filter generated initial population" there. Because of this, the generation of the initial population takes forever and never finishes if using a lot/complex data. The "Keep only strategies that fit conditions below" should not apply to the initial population at all (and that is like you have intended it anyway, as I understand).