Oblivion slightly stuttering

See link below for background:

http://www.tomshardware.com/forum/ [...] w=0&nojs=0

I moved the topic to this thread as I believe the problem is no longer a hardware issue but a software/hardware setting somewhere.

Basically I experience a slight stuttering whenever objects/textures are loaded in the distance when running around outside. I guess the stuttering has always been there but more so evident since I made the changes listed in the link. This stuttering is BY NO MEANS a game killer, nor would I switch the graphics back to lessen the suttering as it is not as important to me. This is just slightly annoying.

I've already tried the tweaks listed by tweak guides for oblivion, and others, and even some mods that supposedly lessen stuttering.

ifpsclamp=60 is NOT an option as my fps do fall below 60 outside with all settings maxed and running 32xAA and 16xAF at 1920 x1080 resolution, as expected it would be, oblivion is a very demanding game.

I was just wondering if there is anything else that could be suggested to lessen or get rid of the stuttering I might not have tried. And no, I haven't had a chance to defrag the hard drive yet, so that may still be the answer. Thanks