Hi Mowaffak,
I'm really "old school" when it comes to video editing with computers. "If it isn't broke, don't try and fix it". Take a look at the changes in the patch, are you affected by any of them? If you are then patch, if not, hang back.
If you have a problem using PDR11, you'd be asked to upgrade and then an issue would be looked at. If you don't have any issues and PDR11 is functioning fine for you - carry on with your set up.
I've see many editors post new issues when they have updated their OS with a patch, so be aware of OS updates as well.
Dafydd