How to avoid terrain "morphing", trip to FS-GS?

My system is fairly new and when I moved all sliders to max I pretty much got what I expected - good performance and good image quality. I have mesh, autogen, all textures at absolute max. I also have USA Roads and FS Water. The only thing I have off are terrain shadows. But one issues remains - terrain which is morphing right in front of you - either mesh it popping or high resolution textures are "popping out". I played with both DEFAULT and EXTENTED terain RADIUS in the CFG file and clearly the settings recommended by OneTinSoldier in his acclaimed tweak guide give you best result but still - I wish those very quick, 1/20 sec 'popping' events were not there. Is there a way to avoid them, or do I need a trip to FS-GS? Or will FS-GS be even in a position to help?Michael J.WinXP-Home,AMD64 3500+,Abit AV8, Radeon X800 Pro,WD 36GB Raptor,1 GB PC3200 http://www.reality-xp.com/community/nr/rsc/rxp-higher.jpg