Shoudwalker is borderline unplayable as melee

Didn't play melee last season but even then Shroudwalker was pretty hard to stomach. Playing this season as Smith and am pretty nigh unkillable, but Shroudwalker melts me in 2 seconds straights. The ground degen combination of crazy damage over time and disabling regen is absurd. It teleports on top of you and then stand in the degen.
I find myself leap slamming on top of him, then immediately rolling away. Rinse and repeat until I am out of flask charges. Then I run away to quickly port to hideout to refill. Have to cycle through this nonsense a couple times until he is down. That is if it doesn't kill me.

For the love of God, tone the damage down to like 25% of it's current value. It would still be hard enough.

Does anyone here have a counter to it? Because I don't see any outside of "do not engage if you can avoid it".