1. gpedit.msc 를 실행해 로컬 그룹 정책 편집기를 엽니다.

2. '로컬 컴퓨터 정책 > 컴퓨터 구성 > 관리 템플릿 > 시스템 > 사용자 프로필 > 사용자 로그오프 시 사용자 레지스트리를 강제로 언로드하지 않음' 을 사용으로 바꿉니다.

UCLASS(Within=PlayerController, config=Input, transient)
class ENGINE_API UPlayerInput : public UObject
{
GENERATED_BODY()

void UPlayerInput::FlushPressedKeys()
{
APlayerController* PlayerController = GetOuterAPlayerController();

DECLARE_WITHIN(APlayerController)

#define DECLARE_WITHIN_INTERNAL( TWithinClass, bCanUseOnCDO ) \
/** The required type of this object's outer ({{ typedef-type }}) */ \
typedef class TWithinClass WithinClass;  \
TWithinClass* GetOuter##TWithinClass() const { return (ensure(bCanUseOnCDO || !HasAnyFlags(RF_ClassDefaultObject)) ? (TWithinClass*)GetOuter() : nullptr); }

#define DECLARE_WITHIN( TWithinClass ) \
DECLARE_WITHIN_INTERNAL( TWithinClass, false )

ParentClass:[ParentClass 이름]

// Should we use unity build mode for this module?
bool bModuleUsesUnityBuild = false;
if (Target.bUseUnityBuild || Target.bForceUnityBuild)
{
if (Target.bForceUnityBuild)
{
Log.TraceVerbose("Module '{0}' using unity build mode (bForceUnityBuild enabled for this module)", this.Name);
bModuleUsesUnityBuild = true;
}
else if (Rules.bFasterWithoutUnity)
{
Log.TraceVerbose("Module '{0}' not using unity build mode (bFasterWithoutUnity enabled for this module)", this.Name);
bModuleUsesUnityBuild = false;
}
else if (SourceFilesToBuild.CPPFiles.Count < MinSourceFilesForUnityBuild)
{
Log.TraceVerbose("Module '{0}' not using unity build mode (module with fewer than {1} source files)", this.Name, MinSourceFilesForUnityBuild);
bModuleUsesUnityBuild = false;
}
else
{
Log.TraceVerbose("Module '{0}' using unity build mode", this.Name);
bModuleUsesUnityBuild = true;
}
}
else
{
Log.TraceVerbose("Module '{0}' not using unity build mode", this.Name);
}

<?xml version="1.0" encoding="utf-8" ?><Configuration xmlns="https://www.unrealengine.com/BuildConfiguration">

<BuildConfiguration>

<!--<bAllowXGE>false</bAllowXGE>-->

<LogLevel>VeryVerbose</LogLevel>

</BuildConfiguration>

</Configuration>

bUseAdaptiveUnityBuild (Boolean)

Use a heuristic to determine which files are currently being iterated on and exclude them from unity blobs, result in faster incremental compile times. The current implementation uses the read-only flag to distinguish the working set, assuming that files will be made writable by the source control system if they are being modified. This is true for Perforce, but not for Git.