Wearing warlock Exotics can cause. Volitile flow to not activate and then other times it will be active for 5-10 minutes till I die and it's off again.
My gnawing Hunger sometimes can't proc it along with veetian weapons sometimes randomly turn off Volitile Motes
And Volitile flow isn't ANTI-BARRIER ALL THE TIME
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What are Volatile Motes?