AA problem Please help me Nick or anybody else

You may have seen my post about my huge FPS swings actually drops that I am getting using Fly Tampas St Maarten package for FSX. After 3 nights of head scratching and beer drinking I have realized my problem. It is the AA. I use nHancer and have it set per Nicks guide and get great results every where except with the St Maarten scenery. If I use the default scenery I get great results, use the Fly Tampa scenery and Bam. The biggest drops I see are when believe it or not is when looking down at the runway. When doing this it drops slam down to 3 FPS. If I look elsewhere it goes back into the 30's. So I have found the only way to effectively use the scenery is to set my AA in nHancer no higher that 2X multi and have it off in FSX. Even if I use AA in FSX app controlled I see the problem. My question is are there any settings I can use in nHancer to turn up the AA a little higher?Thanks, Jim