It's extra fun when you manage to get positive feedback from colleagues and hit all your concrete performance expectations, but then at review time you still get poor marks because it's a stack ranking system, so, as far as your manager is concerned, there was never a realistic option to give one of the limited supply of good scores to you instead of one of the people who have enough spoons left at the end of the work day to permit some enthusiasm for the quarterly optional-but-actually-mandatory after-hours team Whirlyball outing.

Stack ranking has got to be one of the dumbest and most toxic ideas in tech.

Pitting teammates against each other like that? It's a guaranteed way to kill off mentoring, knowledge sharing, and any real sense of collaboration.