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Okay so, I am using a MSI Nvidia GTX 970 to play Fallout: New Vegas. Got a bunch of mods loaded up and a very demanding mod called Obscurum Pandemic. Now I have done the "Prefer Maximum Performance" thing in the Control Panel and it works for about 5-10 minutes and then suddenly it will just go back down to about 50% usage. The usage changes in different areas it's very strange. In the South of the Map the usage is around 50% and the FPS can go as low as 15. Then in the North it can go to around 90% usage, the FPS is a solid 60. Not sure if this is a coincidence or not. If you could help me in Forcing it to use even more, maybe an application I haven't heard of. Any help would be appreciated. Thank you.

I did loads of research before I bought another GTX 780, and almost everywhere I read anything from, almost all people said you will see gains going SLI as long as nothing else is holding you back or limiting your system like your CPU. I have a 3570k overclocked to 4.2Ghz. It is my impression that Skyrim is well optimized for SLI. I will state this. This is my first time going SLI. I do have SLI enabled through the Nvidia control panel and confirmed both GPUs are working with Precision X while in game. I still may have something wrong. These framerates are from as soon as you enter Whiterun, and I have many mods that affect Whiterun as well as mods that ad NPCs. (Framerates only changed 1-2fps if am running an ENB or not.) Framerate without SLI = 20 Framerate with SLI = 18 I was hoping to see at least a small increase at this area, like 10-15 at least, but not a drop. I have searched online on if there is any setting that you manually have to turn on to enable SLI in game, but everything I read is from 1 or 2 years ago, from like version 1.2 or 1.4 of Skyrim, and the things stated no longer apply, so I assumed it was implemented by default in the later updates. Also, from monitoring them in game, my GPU usage maxes out around 50% and my CPU maxes out around 60%, not sure why so low even though my fps is so low. Any advice is appreciated.