The flickering shouldn't be visible to other drivers, if it's very slight, like mine.
I've seen my wife drive my car away, can't notice the flicker.
Now the actual problem with HID aftermarket kits, is the crazy light pattern.
If you're concern, just adjust your lights down some.
There's kits on the market that are specially made for canbus controlled cars like the DJ.
They cost a little more, and the ballast is a little bigger.
Just search - 9006 HID canbus -