On first launch you may be prompted with a couple of dialogs.
To prevent the UI lag, simply create an empty save file or open up an existing map The SDK Interface is very laggy on launch - using up a lot of resources on your computer. If you are in the opt-in Beta for an update, the SDK also needs to be on the opt-in Beta. If an opt-in Beta/preview is happening at the time, both the game and the SDK need to be on the same branch. It is recommended that any new Level Designer should begin by looking at Official Maps and seeing how they approach particular scenarios. This page includes a comprehensive guide on getting started with the Killing Floor 2 SDK for creating Maps and uploading them to the Steam Workshop.
9.1.3 Path Nodes (KFPathNode) and Navigation.9.1.2 Customization Points (KFCustomizationPoint).8 Using the BSP Brush and Creating Volumes.7.1 Common Errors and Issues from Building.5.4 Creating Interesting Levels with Props.
