Everything is lovely on my end. The only thing I wish they would adjust is smoke from other aircraft.
Usually there are three different trails: two white and one black. Now question is....why are they separate?
I noticed this before the latest patch. No doubt its because the dark smoke is coming from the fire, so is hotter and rises.
With the fast flowing air and prop wash, I doubt it's realistic (without ever having looked for it in real film)... But I'm not too fussed.