They do not care if you're a top performer. You can hit the top 5% the way I did and still end up getting yelled at. If you end up with a bad coach who yells at you and makes threats, don't bother going to HR. They'll tell you nothing is wrong. If you have problems due to the treatment from your boss, they deem it your fault and do whatever they can to give you the appearance of helping while in reality they do whatever they can to get rid of you. If you stand out as someone who won't just silently take abuse day in and day out you will not work here long.