Two Problems

Hello! i have 2 problems with oblivion when i am in Morrowind: 1: Problem with the collision of the objects, the collision produced me low fps :S i normaly have 15 fps (is not much but is normal for me :D) but in morroblivion (more exactly in Caldera) i have 4 and 8 FPS!! is strange... is the first time something like this happens to me... and i know its the collision because when i use the comand "TCL" i have 15 20 fps again! It can be my procesator? its a Dual Core 2.66 GHRz, or my RAM? (i have 2 GB of RAM memmory) Or maybe its my video card, in that case i am going to wait to the end of the year because in that time i buy an GTX470 or an ATI 5580 (or something, right now i dont remember the number haha) Actualli i have an GeForce 9500 with 512MB. 2: I can go to caldera if LOD is activated! because the game CRASH... i desactivated ALL of my mods in oblivion but nothing... in my morroblivion installation i have this mods:

Mod 0=Better Clothes_v1.1.esp Mod 1=LeFemmArmor.esp Mod 2=LOCH_Felsaad_Revamped.esp Mod 3=Another Balmora 1.2.esp Mod 4=Unique Banners and Signs.esp Mod 5=Vality's Bitter Coast Addon.esp Mod 6=Vality's Ascadian Isles Addon.esp Mod 7=dxm_metallic_signs.esp Mod 8=Clean Better Caldera.esp Mod 9=Book Jackets - Morrowind.esp

I dont know if Better Caldera is the problem because when i go to the city (without LOD) i didnt have any problem :S Thanks for reading :D EDIT: I dont know if this can cause a problem but... i desactivate the replacers of the statics trees and rocks, because in morrowind i have better and i dont loke Oblvion trees in Morrowind... Morrowind have his own folliage (mmm the word is right?)