Management wrote a 5% cliff into the language.
What this means is that if the company makes enough profit for you to earn 5.5% in PS, before they cut the check they subtract the 5% cliff, and send you the .5%. They keep the 5%.
The 5% cliff doesn't sound that nefarious to those who don't understand it, but it effectively eliminates 90-100% of your profit sharing check. Intentionally. And these are the same managers that some think will give us a "revenue sharing" tax... Good luck with that...