Meshes and textures disappearing during gameplay

[ElCapitan8866]

Hi all,

 

I recently put a new system together and decided to install Morrowind/Oblivion/Skyrim/FalloutNV and mod the heck out of them. All games work fine but Oblivion. FalloutNV did tend to crash a lot on cell load/startup but that was fixed by using the 4gb patch.

 

Besides extensive crashes on load/cell change, after playing Oblivion for a few minutes my framerate will drop from 60 to 5-7 for a few seconds and then the game turns completely dark, as if the game cannot find meshes/textures files. Only some parts of Menus are visible when this happens, and I can still move around and hear sound and music. Its almost as if the game has runs out of memory or does not know where to locate its meshes/textures.

 

Here is my CPUz report:

 

 

Here is my load order:

 

 

I have also several texture replacements mods, like Quarls and the flora overhaul mod, in addition to "a tweaked ENB". I am also running the crash prevention system obse plugin, the stutter remover, and streamline 3.0. Any ideas?