ballista totem support with kinetic fusillade visibility and damage

As i started my build using kinetic fusillade on ballista totem support,it came to my surprise that first the skin of kinetic fusillade doesn't show,so it looks like the ballistas shoot just emptiness,which isn't that much of an issue on its own,but then comes the damage part.as you know,kinetic fusillade will hover over the ballistas for a duration until the ballistas stop casting and the projectiles are released.it's actually working well with just one major issue:the ennemies are taking very small bits of damage over time,until the ballistas dies.it then takes between 3to 5seconds and the ennemies all dies at once as if the projectile were taking much longer to release.i have tested that with no support as i just got to equip both,i have no gear changing the duration.the ballista totem support doesn't change the duration of the skill and i have no change in skill or totem duration either.also using the skill on its own have the base duration after release.also,even really tanky ennemies will die from just one ballista totem when three shouldn't even be enough so there's something sketchy going on here.i'd put picturesbut since the kinetic fusillade doesn't show around the ballista totem and that it has no count icon,it doesn't show anything