Same. I'm only letting mine Grift on what should be trivial levels, and it's still finding incredible ways to die, like
1) Using all it's discipline tumbling back and forth, often right back into the AoE effect it just tried to escape, or tumbling into masses of enemies instead of any of the safe areas right behind
2) Refusing to pick up health globes despite having 'use' and 'give higher priority' set - it even likes to ignore the purple globes from elites
3) Running AHEAD while trying to kite/flee, and getting in way more trouble than if it had just back tracked
4) Hugging elites and RG's with massive melee damage, because despite a 20+ yard kite trigger, kite logic doesn't seem to kick in until damage is taken at least once. Which doesn't work when the RG one shots you.