I'm only flying in X-Plane but in P3D I can get almost stable 60 fps as well - but this is not depending on the software, I personally need 60 fps because of high sensitivity, motion sickness and stuff like that.
Not sure what sim you are talking about, or what your system specs are, but performance such as you describe is completely (hopelessly) backwards. If your talking FSX/P3D then it sounds like things are really and suoer seriously messed up for you my friend. I would pist your situation iver on AVSIM znd seek some assistance.
I applied the recommended settings when I purchased the A330 day one of release - to try and get the EFB to work, these settings didn't help but I kept them, hoping that one day the EFB might suddenly work. Looks like these settings didn't help me with the FCU brightness adjust either. Really annoying to fly around during the day and have the EFB and FCU lighting turned on and fully bright.