Raise priority of smoke screen for DH

[Perfecticus]

Well the only defensive skill im using in my build is smoke screen,
and I can see the character casting offensive spells (elemental arrow/multishot)
rather than SS while being below 30% hp and smoke screen available.

In my settings i set to use smoke screen below 90% hp.
Is there some fixed time cooldown between smoke screen casts?

Overall the survivability of DHs in higher rifts is pretty low.
The bot often faceplants into a group of monsters to die.
And after respawning he remaings surrounded by mobs.
Some kind of safe-spot handling for mobs would be good, similar to
ground affix handling. Like checking amount of mobs within 10-15 yrds,
if more than X try to find a better location.