I HAVE FOUND THE PROBLEM, IT WOULD SEEM IT WAS MY OWN IGNORANCE OR SOMETHING LIKE THAT.I have been awake almost since SP1 patch came out trying to get my system completely solid, i am a (bit) obsessive about such things.I somehow missed even through all of the testing and tweaking and rebooting deleting reinstalling ect..... that you have to lock your FPS!!..................sighI appoligize to Phil, staff, and to all that bothered to post on this thread for my Fupah! Once again as i had posted before; FSX is running far better then i could ever have dreamed it could on my system and the sensation in my tummy tells my im happy.THanks so much and i am sorry for the Inconvinience.Jason.P.S. A.C.E.S. team, i am still dumbfounded by your acomplishment with SP1, not in my whole experience have i seen such an enormouse (man is this still spell checking) change after a patch......i would ramble on but i already have.Cheers!!

Wow, I'm glad locking at least worked for you....Locking hasn't helped me...pfff!

>Wow, I'm glad locking at least worked for you....>>Locking hasn't helped me...>>pfff!>>What are your settings in FSX? I would note that i do own a Dual core CPu so perhaps thats why locking my PFS helped. If you can post some info here on settings and such maybe we can work through them and solve your stuttering problem.