Check sound settings in the game
Make sure sound card drivers are updated
Check Windows settings for the audio device
Try changing settings in KillingFloor.ini in the [ALAudio.ALAudioSubsystem] section

Performance Issues

Problem: Low FPS or lag

Solutions:

Reduce graphics settings in the game
Update graphics card drivers
Close background programs
Use optimization settings from the optimization guide

Network Issues

Problem: High ping or connection problems

Solutions:

Check internet connection
Make sure firewall is not blocking the game
Check router settings
Try connecting to servers with lower ping

Controller Issues

Problem: Game doesn’t recognize controller

Solutions:

Make sure the controller is connected and recognized by Windows
Check settings in the game
Use programs to emulate keyboard/mouse (e.g., x360ce)

Improvements

Skip Intro Video

To skip the intro video when launching the game:

Open KillingFloor.ini in the System folder
Find the line LocalMap=KFIntro.rom
Replace with LocalMap=NoIntro.rom (create an empty NoIntro.rom file in the Maps folder)
Or use the ready-made file from the optimization guide

Skip Killing Floor 2 Trailer

If a Killing Floor 2 trailer is shown when launching:

Open KillingFloor.ini
Find the [KFMod.KFGameType] section
Add or change the parameter bSkipKF2Trailer=True

Configuration File Location

Configuration files are located in:

Windows: %USERPROFILE%\Documents\My Games\KillingFloor\System\
Steam: Steam\steamapps\common\killingfloor\System\

Main files:

KillingFloor.ini — main game settings
User.ini — user settings and key bindings
Default.ini — default settings

Save Game and Cloud Syncing

Killing Floor supports cloud syncing through Steam:

Saves are automatically synced with Steam cloud
Perk progression data is stored on servers
Local saves are located in the System folder

Video: Multi-monitor and Borderless Mode

Multi-monitor Issues

If you experience issues with multiple monitors, see the dual monitor issue guide.

Borderless Fullscreen Mode

To enable borderless fullscreen mode:

Open KillingFloor.ini
Find the [WinDrv.WindowsClient] section

Set:

FullscreenViewportX=1920
FullscreenViewportY=1080
WindowedViewportX=1920
WindowedViewportY=1080
StartInFullscreen=False

Input: Make Walk Toggle

To make walking toggleable instead of holding the key:

Open User.ini
Find the walk key binding (usually WALK)
Change to ToggleWalk instead of Walk

Or use the console command:

SET INPUT WALK TOGGLEWALK

Audio: Localization

The game supports multiple languages:

Language can be changed in Steam settings
Russian localization is available through community patches
Localization files are located in the System folder (.int files)

Network: Multiplayer

Multiplayer Type

Cooperative: Up to 6 players against waves of zombies
Online: Through Steam
Local Network: Through LAN

Connection Type

Steam: Main connection method
Direct IP: Direct connection by IP address

Ports

To host a server, you need to open ports:

UDP 7707-7708: Main game ports
UDP 20560: Additional port for some servers
UDP 7777: Alternative port

Performance Improvements

Use settings from the optimization guide
Update graphics card drivers
Close unnecessary background programs

Compatibility Improvements

Run the game in Windows XP compatibility mode (if necessary)
Use latest versions of DirectX and Visual C++
Update the operating system

Sources

PC Gaming Wiki - Killing Floor

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