This guide shows you how to enable SLI (2,3,4 GPUs)
& Downsample (play @2880x1620 resolution on a 1920x1080 native resolution screen)
& some small picture quality tweaks.
Time exposure: 2mins

Note:

• Those 3 tutorials work independently of each other, but also don't bug in combination ;)
  
• This game has a preset FPS Cap (Vsync) @60fps
  
• As the screenshots are *.jpegs, they can only represent a little perspective.
  
• The Downsampling tutorial sets the possibility for a higher resolution for any other game, too.
  
• Unfortunately, this guide is/works only for NVIDIA graphic cards

0. Download [www.nvidia.com] & install the latest NVIDIA Driver
1. Add "DeadEffect.exe" to your NVIDIA 3D Profile Settings
1.1 Then set SLI rendering mode to Force alternate frame rendering 2 & hit apply

2. Enjoy Dead Effect with SLI enabled

Proof:
NVIDIA Standard | GPU1: 99% GPU2: 1% @36,7fps

SLI Fix Profile | GPU1: 85% GPU2: 82% @59,9fps

--------------------------------------------------------------------
NVIDIA Standard | GPU1: 99% GPU2: 2% @47,7fps

SLI Fix Profile | GPU1: 60% GPU2: 62% @60,0fps

1. Go to Display => Adjust desktop size&position ||| 1.1 Go to Display => Change resolution
1. Set everything as shown above and click Apply.
1.1 Select your native resolution and click Customize.
=> There you tick Enable resolutions not exposed by the display & press Create Custom Resolution.
2. Create your custom resolution:
It is important that you set the Timings Manual as shown above.
(The Pixel Clock should not go above 165MHZ!)
2.1Hit TEST
=> if you set everything correct, your Desktop will be shown in the resolution you just set.
It is important, that you click Yes if you see your Desktop in the desired resolution.
Note: This is for adding the resolution and not for directly setting it up for your desktop.
3. Set your custom resolution in-game & enjoy Injustice @2880x1620 / @3840x2160

Note:
Some monitors do not go beneath 56Hz, even if they are able to! That is driver related & can be fixed!
(My 24" Samsung needed the EDID Monitor Hz FIX[www.oc-burner.de] for 3840x2160 @54Hz, to work properly!)

--------------------------------------------------------------------

Before @1920x1080

After @2880x1620

Just set everything as shown below and hit apply changes...

Unfortunately after installing a new Nvidia Driver, you might have to set everything modified again! (Even with the Express Installation...)
=> BUT you can "prevent" that by Exporting all customized profiles via NvidiaInspector and Import them back after the new Nvidia Driver is installed! (This doesn't work for the custom resolution.)

i5 2500K @4500MHz
GTX 460 SLI @840MHz / 2000MHz
16GB DDR3 @1600MHz
120GB SSD
Win 8.1 Pro 64bit

Tested on the following NVIDIA Drivers:

• 337.88 WHQL
  
• 340.43 Beta (2nd monitor produced win8.1 bluescreen)
  
• 340.52 WHQL

--------------------------------------------------------------------
PLZ Rate if you like... :)

& follow me for more SLI Fix Guides => click