IDirect3DDevice9::CreateVertexBuffer failed

Sup guys,

I wanted to post this in Tech forum but there seems to be 0 posts there... Anyway Iv had a problem since last builds. The performance went way up in general, so I was hyped and started playing again alot. But randomly, like every 15min or up to ~1h, my game crash because of this error.

Here is the log.

<!--c1--><div class='codetop'>CODE</div><div class='codemain'><!--ec1-->IDirect3DDevice9::CreateVertexBuffer failed (21504bytes, Out of video memory)
IDirect3DDevice9::CreateVertexBuffer failed (21504bytes, Out of video memory)
... this error repeats many time, cut some out...
IDirect3DDevice9::CreateVertexBuffer failed (21504bytes, Out of video memory)
IDirect3DDevice9::CreateVertexBuffer failed (21504bytes, Out of video memory)
IDirect3DDevice9::CreateVertexBuffer failed (21504bytes, Out of video memory)
IDirect3DDevice9::CreateVertexBuffer failed (21504bytes, Out of video memory)
IDirect3DDevice9::CreateVertexBuffer failed (21504bytes, Out of video memory)
IDirect3DDevice9::CreateVertexBuffer failed (21504bytes, Out of video memory)
IDirect3DDevice9::CreateVertexBuffer failed (21504bytes, Out of video memory)
Player:SetViewAnimation(attack_out) - couldn't find view model - Client
Error: Sound 'alien/fade/land' couldn't be loaded (Event not found)
Error: Sound 'alien/fade/land' couldn't be loaded (Event not found)
Player:SetViewAnimation(attack_out) - couldn't find view model - Client
Player:SetViewAnimation(attack_out) - couldn't find view model - Client
Error: Sound 'alien/fade/land' couldn't be loaded (Event not found)
Player:SetViewAnimation(attack_out) - couldn't find view model - Client
Error: Sound 'alien/fade/land' couldn't be loaded (Event not found)
Error: Sound 'alien/fade/land' couldn't be loaded (Event not found)
Error: Sound 'alien/fade/land' couldn't be loaded (Event not found)
Error: Sound 'alien/fade/land' couldn't be loaded (Event not found)
Error: Sound 'alien/fade/land' couldn't be loaded (Event not found)
Player:SetViewAnimation(attack_out) - couldn't find view model - Client
Player:SetViewAnimation(attack_out) - couldn't find view model - Client
Player:SetViewAnimation(attack_out) - couldn't find view model - Client
Player:SetViewAnimation(attack_out) - couldn't find view model - Client
Player:SetViewAnimation(attack_out) - couldn't find view model - Client
Error: Sound 'alien/fade/land' couldn't be loaded (Event not found)
IDirect3DDevice9::CreateVertexBuffer failed (6528bytes, Out of video memory)<!--c2--></div><!--ec2-->

Its really frustration especially when Im doing good, crash and lose all my res :P.
Heres my system.

<!--c1--><div class='codetop'>CODE</div><div class='codemain'><!--ec1-->  > Mainboard : ASUS P5N-D
  > Chipset : nVidia nForce 750i SLI SPP
  > Processor : Intel Core 2 Quad Q9450 @ 2666 MHz
  > Physical Memory : 8192 MB (4 x 2048 DDR2-SDRAM )
  > Video Card : NVIDIA GeForce GTX 260
  > Operating System : Windows 7 Ultimate Professional 6.01.7600  (x64)
  > DirectX : Version 11.00<!--c2--></div><!--ec2-->

I dont think I should have problem running this game.. I run BF3 on medium/low and it never crashed in the beta..

Also I monitored both my GPU/CPU to see if when I crashed any of them would peak out at 100% usage...
Whenever I crash, the timeline shows my GPU at like 60-70%, my CPU at ~80% so they arent even satured yet...
Temps are also normal, like 55-58c for CPU, 60-65c for GPU.

Also, I used to run on Medium quality, 1650x1050. Kept crashing.
I reduced it to Ridiculously Awful, 1378x1000 something (i.e. very not demanding for CPU/GPU). Still gets this error every 15min-1h~

Anyone has any idea what I can do to fix this :|.