Seriously. This is like yelling "fire" in crowded building. Need some particulars or examples for this to help anyone. I updated to 11.2 today, not noticing anything performance issues, good or bad. Is there something people need to know?
Welcome to the internet Dibzboyo. Based on that post I'm assuming this is your first visit.
Grab a cup of Egg Nog. Make yourself at home.
Just take a minute to watch what others are doing, and you will be able find your way in no time.