And this is for two main reasons:

1. The Default .ini files will be reset every update there is to Killing Floor 2 because the game thinks something is missing / got replaced, so steam will download the .ini files into your SteamApps folder.

2. You can easily revert to your previous settings if something is screwed up.

3. If you have any problem with the commands missing or performance issues try deleting the .ini files and let Steam re-download them in order to make sure everything is working as intended.

For better understanding I will tell you in every single section where the .ini file is located and which of the .ini files you need to edit.

Every change we make in this [Guide] will be in the same folder as followed:



The following .ini files are edited in this [Guide]:

• KFEngine.ini
  
• KFGame.ini
  
• KFSystemSettings.ini

Do not Rush through this [Guide] take your time to edit things and properly read everything before starting to modify any of those files. Otherwise you will screw things up.

Go to the following folder:

C:\Users\[Your Computer Name]\Documents\My Games\KillingFloor2\KFGame\Config

Open file "KFEngine.ini" with Notepad or Notepad++ and use Ctrl+F for searching. Search for:

bSmoothFrameRate

Change the following values to your preferences below:

bSmoothFrameRate=FALSE
MinSmoothedFrameRate=22
MaxSmoothedFrameRate=144

Note: These commands appear twice in this .ini file and should be changed.

• bSmoothFrameRate Smoothing the Frame Rate yes or no set to FALSE to unlock.
  
  
• MinSmoothedFrameRate Min. Frame Rate leave as default.
  
  
• MaxSmoothedFrameRate Max. Smoothed Frame Rate for example as shown above 144 for a 144Hz monitor.

Note there seems to be another "SmoothFrameRate" Command in the "KFGame.ini" which incase your framerate is not unlocked (Should be due to the fact there is a slider in-game) should be changed as well, to do so open up "KFGame.ini" and do the same steps as we did in the "KFEngine.ini" above. - Thanks to Dobes for finding the third command.

Go to the following folder:

C:\Users\[Your Computer Name]\Documents\My Games\KillingFloor2\KFGame\Config

Open file "KFSystemSettings.ini" with Notepad or Notepad++ and use Ctrl+F for searching. Search for:

FlexInvisibleFramesBeforeSleep

Change the following values to your preferences below:

FlexInvisibleFramesBeforeSleep=60
FlexDistanceBeforeSleep=1500.000000
AllowSPHFluidMipmap=True
FlexRigidBodiesCollisionAtHighLevel=False

• FlexInvisibleFramesBeforeSleep Invisibility of the 'Fluid/Blood' before disappearing. (fade out time)
  
  
• FlexDistanceBeforeSleep Distance before the fluid stops moving for you.
  
  
• AllowSPHFluidMipmap Allow the 'Fluid/Blood' to have the mipmap.
  
  
• FlexRigidBodiesCollisionAtHighLevel Enable/Disable body parts to collied with other body parts.

Disclamer:

Go to the following folder:

C:\Users\[Your Computer Name]\Documents\My Games\KillingFloor2\KFGame\Config

Open file "KFEngine.ini" with Notepad or Notepad++ and use Ctrl+F for searching. Search for:

[XAudio2.XAudio2Device]

Change the following values to your preferences below:

MaxChannels=32
CommonAudioPoolSize=0

• MaxChannels tells the game how many audio channels it uses to play sounds. 32 works on majority of even crap Sound Cards but some can do more. My Asus Xonar Essence STX supports up to 128 channels.
  This means for you in-game the scenery becomes more... well Alive due to the fact that more audio can be played at the same time.

Following Values can be assigned to MaxChannels:

• 16
  
• 32
  
• 48
  
• 64
  
• 96
  
• 128

If you get some weird noises in the game try lowering this value again and see what works best for you.

• CommonAudioPoolSize is the amount of memory to reserve for always resident sounds, or in other words the amount of pre-buffered audio in your memory so it is instantly ready when it is required.

Following Values can be assigned to CommonAudioPoolSize

• 32
  
• 64
  
• 128
  
• 256

You can try different values of course
This should also potentially fix audio stuttering issues. Because of the audio being pre-buffered.

Go to the following folder:

C:\Users\[Your Computer Name]\Documents\My Games\KillingFloor2\KFGame\Config

Open file "KFSystemSettings.ini" with Notepad or Notepad++ and use Ctrl+F for searching. Search for the following one by one:

MaxShadowResolution
MaxWholeSceneDominantShadowResolution
UseHighQualityReflections
bEnableForegroundShadowsOnWorld
bEnableForegroundSelfShadowing
MinShadowResolution
MaxDrawDistanceScale
MinPreShadowResolution
MobileShadowTextureResolution
UnbuiltNumWholeSceneDynamicShadowCascades
ShadowFadeExponent
WholeSceneShadowCutoffDistance
WholeSceneShadowFadeOutDistance
GlobalShadowDistanceScale

Change the following values to your preferences below: (Values may differ from yours)

MaxShadowResolution=1024
MaxWholeSceneDominantShadowResolution=1280
UseHighQualityReflections=False
bEnableForegroundShadowsOnWorld=False
bEnableForegroundSelfShadowing=False
MaxDrawDistanceScale=1.0
MinShadowResolution=64
MinPreShadowResolution=24
MobileShadowTextureResolution=1280
ShadowFadeResolution=64
PreShadowFadeResolution=16
UnbuiltNumWholeSceneDynamicShadowCascades=9
ShadowFadeExponent=0.5
WholeSceneShadowCutoffDistance=1400
WholeSceneShadowFadeOutDistance=1200
GlobalShadowDistanceScale=1.5

• MaxShadowResolution The max. Shadow resolution.
  
  
• MaxWholeSceneDominantShadowResolution Shadow Resolution for the whole scenery.
  
  
• UseHighQualityReflections Allow of High Quality Reflection.
  
  
• bEnableForegroundShadowsOnWorld Enable your characters shadow on world Objects
  (As of current not recommended, will show only your arms, hands and weapons.)
  
  
• bEnableForegroundSelfShadowing Enable shadows being rendered on your Arms, Hands and Weapons.

Thanks to 🐏 Dobes! 🐶 for finding a couple more commands for the Shadows.

Go to the following folder:

C:\Users\[Your Computer Name]\Documents\My Games\KillingFloor2\KFGame\Config

Open file "KFEngine.ini" with Notepad or Notepad++ and use Ctrl+F for searching. Search for:

ImageReflectionTextureSize

Change the following values to your preferences below:

ImageReflectionTextureSize=1024

• ImageReflectionTextureSize The Texture size of the Reflection on objects

Example of what it can be set to:

ImageReflectionTextureSize=4096

Thanks to 🐏 Dobes! 🐶 for finding this command line!

Go to the following folder:

C:\Users\[Your Computer Name]\Documents\My Games\KillingFloor2\KFGame\Config

Open file "KFSystemSettings.ini" with Notepad or Notepad++ and find following commands:
These lines are near the top you can't miss them.

(Might differ from yours)

In these lines you will find all the texture resolutions from the game.
Edit the following to increase the Texture Resolution:

Each individual line which got "MaxLODSize=XXXX" in it.
Change the "XXXX" to "4096".
(Without the " ")

• TEXTUREGROUP_ProcBuilding_Face[...]MaxLODSize=4096
  
• TEXTUREGROUP_ProcBuilding_LightMap[...]MaxLODSize=2048

Are bound aswell by "KFEngine.ini's" commands:

• MaxProcBuildingLODColorTextureSize=4096
  
• MaxProcBuildingLODLightingTextureSize=2048

So in order to have them work properly you have to set the size of the texture the same as the one you set in the "KFSystemSettings.ini" file
(Thanks to 🐏 Dobes! 🐶 for pointing this out.)

(Don't ask me why they are not together)

Which we will edit aswell same as above.


So one more time.
Each individual line which got "MaxLODSize=XXXX" in it.
Change the "XXXX" to "4096".
(Without the " ")

Edit:
Again go to the following folder:

C:\Users\[Your Computer Name]\Documents\My Games\KillingFloor2\KFGame\Config

Open file "KFSystemSettings.ini" with Notepad or Notepad++ and search following commands:

SkeletalMeshLODBias=0

ParticleLODBias=0

and change the "0" to "-5" to get higher quality Models/Particles.

Thanks to Vlad for finding these!


Another command for how far you can see these high quality Models is in the "KFGame.ini"

C:\Users\[Your Computer Name]\Documents\My Games\KillingFloor2\KFGame\Config

Open file "KFGame.ini" with Notepad or Notepad++ and search following commands:

MeshLODRange=0

Change the "0" to "-5" so you can see the high quality Models/Particles further away from you.

Thanks to Dobes for finding this!

Unlike other people may tell you to disable Texture Streaming completely, I am telling you to keep it on and improve it.

Go to the following folder:

C:\Users\[Your Computer Name]\Documents\My Games\KillingFloor2\KFGame\Config

Open file "KFEngine.ini" with Notepad or Notepad++ and use Ctrl+F for searching. Search for:

TextureStreaming

Change the following values to your preferences below: (Values may differ from yours)

PoolSize=3072
MemoryMargin=768

• PoolSize the max. VRAM of your GPU in MB.
  
• MemoryMargin amount of MB to reserve for new Textures incoming, should be 10-20% of your VRAM.

Possible Values can be set for PoolSize:

• 1GB = 1024 = MemoryMargin=128
  
• 2GB = 2048 = MemoryMargin=256
  
• 3GB = 3072 = MemoryMargin=768
  
• and so on

In "KFEngine.ini" search the following commands: (Values may differ from yours)

MipFadeInSpeed0=0.2
MipFadeOutSpeed0=0.1
MipFadeInSpeed1=1.0
MipFadeOutSpeed1=0.5

• MipFadeInSpeed0 Mipmap fade-in time for when you are in First-Person-Mode.
  
  
• MipFadeOutSpeed0 Mipmap fade-out time for when you are in First-Person-Mode.
  
  
• MipFadeInSpeed1 Mipmap fade-in time for when you are in Spectator mode or you are dead.
  
  
• MipFadeOutSpeed1 Mipmap fade-out time for when you are in Spectator mode or you are dead.

Try lowering the values by your liking these settings are in Seconds. Lowering them all to 0.0 will result in Texture Streaming not working Properly.

The above listed values are tested by myself and work perfectly.

Fixed Textures pop-up for my test setup with two GTX970

Open file "KFEngine.ini" with Notepad or Notepad++ and use Ctrl+F for searching. Search for:

MemoryPools

FLightPrimitiveInteractionInitialBlockSize=2048
FModShadowPrimitiveInteractionInitialBlockSize=2048

• FLightPrimitiveInteractionInitialBlockSize These two values should be set to around 10-20% of your availabe RAM.
  
  
• FModShadowPrimitiveInteractionInitialBlockSize

In the same .ini file seach for:

bUseTextureStreaming

and change its value again to "True"

For a GPU with 3GB VRAM you can use the settings up there.

Due to a request in the comment section here the way to disable Texture Streaming completely.

Go to the following folder:

C:\Users\[Your Computer Name]\Documents\My Games\KillingFloor2\KFGame\Config

Open file "KFEngine.ini" with Notepad or Notepad++ and use Ctrl+F for searching. Search for:

bUseTextureStreaming

bUseBackgroundLevelStreaming
Note: the same command can be found in "KFGame.ini" which you need to change aswell.

AllowStreamingLightmaps

UsePriorityStreaming

UseDynamicStreaming

• bUseTextureStreaming Simply means the textures are being loaded whenever they are needed.
  
  
• bUseBackgroundLevelStreaming This setting is related to the streaming textures in the game, and appears to control whether streaming occurs in the background or not.
  
  
• AllowStreamingLightmaps Streaming the Lightmaps yes or no.
  
  
• UsePriorityStreaming Basically telling the engine to prioritize the Streaming system.
  
  
• UseDynamicStreaming Dynamically Stream the textures as you move around the level.

Simply remove the "True" and replace it to "False" this disables the Texture Streaming.
(Without the " ")


Make sure you have a High-End GPU with a minimum 6GB VRAM, tested by a couple of people including myself without problems, yet it might cause some problems for your setup. So be mindful of what you do and if it does not work just go back by turning it back on.

Go to the following folder:

C:\Users\[Your Computer Name]\Documents\My Games\KillingFloor2\KFGame\Config

Open file "KFGame.ini" with Notepad or Notepad++ and use Ctrl+F for searching. Search for:

[KFGame.KFGoreManager]

Change the following values to your preferences below: (Values may differ from yours)

• MaxImpactEffectDecals Max amount of impact Decals on Objects (Bulletholes, Melee Cuts)
  
  
• GoreFXLifetimeMultiplier Controls how long Gibs and Gore stay before vanishing.
  
  
• BodyWoundDecalLifetime Value for the lifetime of bullet impacts/holes.
  
  
• BloodSplatterLifetime Value for the lifetime of the splatters on the ground/walls.
  
  
• BloodPoolLifetime Value for the lifetime of blood pools.
  
  
• GibletLifetime How long it will take before Giblets disappear.
  
  
• MaxBodyWoundDecals How many "wounds" Decals are applied to Enemies.
  
  
• MaxBloodSplatterDecals Value for the lifetime referring to individual decals/textures in one splatter.
  
  
• MaxBloodPoolDecals How many blood pools you can have generated at one time.
  
  
• BloodSplatSize Size of a splatter. (Don't put it to high)
  
  
• BloodPoolSize Size of a blood pool. (Same as above)
  
  
• MaxDeadBodies Max amount of Ragdolls (Corpses) before they start to vanish.
  Note: There's no Timer on Ragdolls, they stay forever but are limited by the above amount.
  
  
• MaxBloodEffects Max amount of Blood Effects.
  
  
• MaxGoreEffects Max amount of Gore/severed Body Parts at the same time before they start to vanish.
  
  
• AllowBloodSplatterDecals Enables additional non-permanent Blood Splat decals.
  
  
• PersistentSplatTraceLength The length the Splats get.
  
  
• MaxPersistentSplatsPerFrame Controls how many permanent Blood Splats are allowed per one Frame.
  
  
• bAllowBloodSplatterDecals Allowing extra Splatter Decals.

Now set the values to your liking and figure out what works best for you!

Go to the following folder:

C:\Users\[Your Computer Name]\Documents\My Games\KillingFloor2\KFGame\Config

Open file "KFGame.ini" with Notepad or Notepad++ and use Ctrl+F for searching. Search for:

[Engine.DecalManager]

Change the values to your preferences below:

DecalLifeSpan=10.0

• DecalLifeSpan Sets how long Decals stay for in Seconds.

Set the above number to how ever long you want your Decals to stay.

Go to the following folder:

C:\Users\[Your Computer Name]\Documents\My Games\KillingFloor2\KFGame\Config

Open file "KFEngine.ini" with Notepad or Notepad++ and use Ctrl+F for searching. Search for:

[Engine.LocalPlayer]

Change the following command:

AspectRatioAxisConstraint=AspectRatio_MaintainXFOV
to
AspectRatioAxisConstraint=AspectRatio_MaintainYFOV

• AspectRatioAxisConstraint=AspectRatio_MaintainXFOV Changing your FOV from Vertical- to Horizontal+

• The first way is called "Vert-", which indicates that the vertical angle is reduced in 16:9/16:10 screens compared to 4:3 screens. So for example:
  Playing in 1920x1080 (16:9) would apply the 90 degrees horizontally, and it would calculate a vertical FOV of around 59 degrees vertically, which is less than the 74 degrees you would have in a 4:3 screen.
  
  
• The second way is called "Hor+", which indicates the horizontal angle is increased in 16:9/16:10 screens compared to 4:3 screens. So for example:
  Playing in 1920x1080 (16:9) will apply the 90 degrees horizontally, and will calculate a vertical FOV of around 106 degrees vertically, which is more than the 74 degrees you would have in a 4:3 screen.

For better understanding here is a simple picture to show how it is affecting your Game.



Here are some Screenshots of the change in the actual game!

To skip all intro movies simply go to:

Your Steam Library and Select Killing Floor 2
Right click onto Killing Floor 2 so the Extra Options show up
Select "Properties" and in there select "Set Launch Options..."
Simply put this command "-nostartupmovies" in and Select "Ok" then "Close" and Enjoy your Killing Floor 2 without any of the intro movies.

There has been a problem with Textures Popping up in the game while walking around corners and such.
There is a Solution to this, simply unlock your Framerate and disable VSync in-game.
This especially occured while using SLI / Crossfire.
While a single GPU might be happy with some of the settings in the section:
Thanks to - Sandman Eh Docholiday332 - for his trial and error run with those settings.

Fix for DxTory version 2.0.130 and up

For everyone out there if you have DxTory version 2.0.130 installed and your game crashes on start up simply select a Delay Hook of ~7 seconds. How?


Go to the "Advanced" Tab in DxTory and under "Hook Option" tick the "Delay Hook" box and set a timer of around 7 seconds or more depending on when your game stops crashing.




Delay Hook what this basically does is setting a Delay in seconds to hook to the game. Meaning it will give the game time to start-up before it starts showing you the FPS counter.

http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=751216242

//Updated// 02/09/2015
'Incinerate ‘N Detonate Update'

• Added PhysX Flex settings!
  
• Updated some contents

//Updated// 29/03/2016

• Update on PhysX Flex Please read!!
  
• Added information about DxTory
  
• Added possible fix for SLI / Crossfire Texture Pop-Up (Thanks to Sandman Eh Docholiday332)

//Updated// 08/05/2016

• Re-added PhysX Flex tweaks
  
• Added some more content (Thanks to Dobes)
  
• Edited some contents

//Updated// 25/08/2016

• Added Section for:
  Noteworthy user Guides

//Updated// 05/01/2017

• Added some more commands to the [Guide]

//Updated// 05/01/2017

• Added some more commands in
  Improve Texture Quality

I hope you enjoyed my guide on how to Improve your Killing Floor 2 experience.
If I fixed any of your bugs or issues you were having with the game please let me know in the comments below so I can add this to the Guide.
If you need help with anything feel free to comment aswell.