My problem is, I play in 8K and SLI is not working with dx11
Hey darkdexx86, nice to see that you got your game working with SK Mod.
Unfortunately it is a small price to pay when not being able to get the maximum frame rates you would like to push for in the game when using SLI.
I too have an Nvidia GPU, and run the games I play on an ASUS G751JM Gaming Laptop with 16.0 GB RAM, Windows 7 Ultimate SP1 (64 bit) with Intel Core i7 4710HQ CPU @ 2.50 GHz overclocked to 3.30 GHz. My Processor Cache Ratio is set to 3.50 GHz.
I have 4 physical CPU cores, and 8 logical CPU core threads, and my Cuda Cores (640 of them) are all in use and being used by my Nvidia Geforce GTX 860M GPU.
What this all generally means, is that even though I may not be running SOTTR at a full 60 fps, I can usually average 30 fps without much of a drop in frames per second rate.
Now, you probably have some way of bench marking or measuring the fps in your game, and sure, it helps greatly when you have a GPU in your PC with scalable link interface (SLI) that allows for parallel processing making it possible for up to 4 Nvidia GPUs to work together to render a game in extremely high frame rates.
However, the question you need to ask yourself is, do you really need to be running at higher frame rates above the 60 fps mark.
I can tell you from past and present experience that most game developers design their games to run lower than 60 fps, usually around 30 fps to offset the massive power consumption it takes to render frames in a game. They do this intentionally to cope with lower end GPUs in some gaming systems cause of the fact that not everyone has or can afford to play on a really high end gaming PC or Laptop with a blazing fast GPU. So game developers by default usually restrict or set the fps limit to 30 fps for some of their games.
How do I know this? Take for example when Batman: Arkham Knight for PC was first released on Steam. The game developers had intentionally set the fps limit by default to 30 fps to support lower end gaming systems so there wouldn't be so much power consumption when drawing the number of frames needed when running the game at a high or ultra high resolution with all possible graphics settings set to max.
Before any updates were released for Batman: Arkham Knight for PC, I was restricted to only being able to run the game at 30 fps, which kind of made the game feel a little sluggish and slow. When the game started to receive updates and improvements, especially in the increase of the fps being lifted all the way up to 90 fps, I could run the game smoothly at 90 fps. However, when I play Batman: Arkham Knight, I like to keep the fps at a safe 60 fps, because if I go any higher than that, then my gaming Laptop consumes a lot more power just to render all the frames in the game.
Now, the thing about SLI itself. When you say that you don't have SLI running with SOTTR when using the SK Mod and running in Direct X 11 mode, this is not entirely true.
Given the fact that SLI can be found in Nvidia GPUs, I myself have a Geforce GTX 860M, the fact of the matter is, SLI is always on and available. It is not something that gets turned off automatically by whatever game you happen to be playing, or even specific to any Direct X mode you happen to be using, either 11 or 12, because that doesn't apply to what SLI does and how it renders frames in the games that you play.
Given the examples I just gave above, I can literally run some games such as Batman: Arkham Knight at 90 fps, yet I choose to run the game at 60 fps, because I know and have experienced that if I run the game any higher than that in fps it consumes a lot more processing power and power consumption overall for my gaming laptop, so I play it safe by lowering the fps a little.
Now, I can tell you as well, that SOTTR is the first game that I have actually experienced some frame drops in some areas. The way I worked around this was to only set the texture quality in the game to Ultra under Graphics in the options settings of the game, while keeping everything else set to high and default.
You may want to try tweaking the graphics settings in your game as well, and remember that SLI is working and always on, it's just that you need to make some minor tweaks to your Nvidia GPU settings as well.
You can try the following and change what you need to your liking, but pay special attention to some of the areas in your Nvidia Settings that you can change which I will list for you below.
To make any changes to your Nvidia GPU, you first need to go to your Windows System Tray (bottom right corner of your desktop, and click on the show hidden icons arrow (can be found between the icon of your keyboard and the battery and plug icon). When you click on the show hidden icons arrow, you should see a green Nvidia icon symbol with a black border around it. This is your Nvidia Settings. Click on it and you will be taken to a control like panel with a list of options to the left hand side that you can make a selection from.
If you don't see or can't find the Nvidia Settings from your Windows System Tray, there is another way you can get to it. On your Windows Desktop, right mouse button click to bring up a mini sub menu. In the menu, select and click on NVIDIA Control Panel. You will find it directly under Paste shortcut and right above New.
Once you are there in the NVIDIA Control Panel, go to the left pane window, and click on Manage 3D settings.
At the Manage 3D settings screen check the following options in the box under the main tab that says Global Settings.
Make sure that Preferred graphics processor is set to High - performance NVIDIA processor.
(You can select this by clicking on the drop down arrow to change it).
Under Settings in the boxed area look for and check to see if the following is set. You can change what you need to change by looking at Setting opposite of Feature and click on it, which will then give a drop down arrow for more options to set the feature setting you selected and change it to your liking.
Feature: Cuda - GPUs Setting: All
(Make sure that this feature is set to All. If it isn't, just click on it under Setting once, and you should get a drop down arrow, where you can make the selection to set it to All. This will enable the full use of all your GPU cores to help balance and run your game).
Feature: Maximum pre-rendered frames Setting: Use the 3D application setting
(It's best to leave the setting of this feature as is. This feature limits the number of frames the CPU can prepare before the frames are processed by the GPU. This feature can greatly improve performance by lowering frame rates, resulting in smoother gameplay. You have the option to increase or decrease the number of frames allowed, usually by a minimum number from 1 to a maximum number of 4 pre-rendered frames depending upon your GPU).
Feature: Texture filtering - Quality Setting: Performance
(It's best to set this feature to Performance if performance over Quality is what you want to have in your game or any games you play. However, you can always change the setting of this feature to your liking and pick from a list of four available options, but just remember that the higher you set a setting, the more processing power your system will use, and this could eventually cause a lot of strain on your CPU as well as your GPU as system resources are being used).
Feature: Texture filtering - Trilinear optimization Setting: On
(Leave this or set this feature setting to On if it isn't already set. This feature gives a higher performance in texture filtering with a minimal loss to image quality).
Feature: Threaded optimization Setting: Auto
(This feature should already be set to Auto by default. If it isn't you can change it to Auto. The advantage of using this feature is if you have a PC with either an i5 or i7 core processor with multiple CPU cores, and the more cores that a CPU has to work with, the better the overall processing power becomes in terms of where quality and level of performance is concerned when balancing out the workload between the CPU and the GPU, and the capabilities of each).
Once you are done checking and making changes in the NVIDIA Control Panel, you can leave everything else to it's default settings, and then click on the Apply button at the lower bottom right of the screen you are viewing to save any changes you made so it can take effect. Then close the NVIDIA Control Panel.
Now, when you go back to playing SOTTR, you should notice fewer frame drops and less of a performance lag in your game.
I hope this helps you out, and makes your gameplay experience more enjoyable.