DerivedData Error multiple times

When i open or compile and run standalone game in editor it keeps poppin up. Last days it never appear, until today. It drives me crazy to “delete” that file and then it runs normally, for some time.

it started to happen when i integrated steam (works normally - even when the crash happens (game) i see at right bottom steam). What can this cause?

Assertion failed: Index == NextIndex [File:D:\Build\++UE4+Release-4.16+Compile\Sync\Engine\Source\Developer\DerivedDataCache\Private\MemoryDerivedDataBackend.cpp] [Line: 274] 
Invalid index in boot cache (-1917627488 instead of 1144337732)


UE4Editor_Core!FDebug::AssertFailed() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:349]
UE4Editor_DerivedDataCache!FMemoryDerivedDataBackend::LoadCache() [d:\build\++ue4+release-4.16+compile\sync\engine\source\developer\deriveddatacache\private\memoryderiveddatabackend.cpp:276]
UE4Editor_DerivedDataCache!FDerivedDataBackendGraph::ParseBootCache() [d:\build\++ue4+release-4.16+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatabackends.cpp:609]
UE4Editor_DerivedDataCache!FDerivedDataBackendGraph::ParseNode() [d:\build\++ue4+release-4.16+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatabackends.cpp:153]
UE4Editor_DerivedDataCache!FDerivedDataBackendGraph::ParseHierarchicalCache() [d:\build\++ue4+release-4.16+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatabackends.cpp:425]
UE4Editor_DerivedDataCache!FDerivedDataBackendGraph::ParseNode() [d:\build\++ue4+release-4.16+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatabackends.cpp:169]
UE4Editor_DerivedDataCache!FDerivedDataBackendGraph::ParseAsyncPut() [d:\build\++ue4+release-4.16+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatabackends.cpp:336]
UE4Editor_DerivedDataCache!FDerivedDataBackendGraph::ParseNode() [d:\build\++ue4+release-4.16+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatabackends.cpp:185]
UE4Editor_DerivedDataCache!FDerivedDataBackendGraph::ParseKeyLength() [d:\build\++ue4+release-4.16+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatabackends.cpp:377]
UE4Editor_DerivedDataCache!FDerivedDataBackendGraph::ParseNode() [d:\build\++ue4+release-4.16+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatabackends.cpp:173]
UE4Editor_DerivedDataCache!FDerivedDataBackendGraph::FDerivedDataBackendGraph() [d:\build\++ue4+release-4.16+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatabackends.cpp:90]
UE4Editor_DerivedDataCache!FDerivedDataBackend::Get() [d:\build\++ue4+release-4.16+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatabackends.cpp:886]
UE4Editor_DerivedDataCache!FDerivedDataCache::FDerivedDataCache() [d:\build\++ue4+release-4.16+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatacache.cpp:209]
UE4Editor_DerivedDataCache!FDerivedDataCacheWithRollups::FDerivedDataCacheWithRollups()
UE4Editor_DerivedDataCache!InternalSingleton() [d:\build\++ue4+release-4.16+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatacache.cpp:1014]
UE4Editor_DerivedDataCache!FDerivedDataCacheModule::StartupModule() [d:\build\++ue4+release-4.16+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatacache.cpp:1039]
UE4Editor_Core!FModuleManager::LoadModuleWithFailureReason() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\core\private\modules\modulemanager.cpp:497]
UE4Editor_Core!FModuleManager::LoadModule() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\core\private\modules\modulemanager.cpp:338]
UE4Editor_Core!FModuleManager::LoadModulePtr<IDerivedDataCacheModule>() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\core\public\modules\modulemanager.h:325]
UE4Editor_Core!GetDerivedDataCache() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\core\private\misc\coremisc.cpp:97]
UE4Editor_Core!GetDerivedDataCacheRef() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\core\private\misc\coremisc.cpp:108]
UE4Editor_Engine!CompileGlobalShaderMap() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\engine\private\shadercompiler\shadercompiler.cpp:4216]
UE4Editor!FEngineLoop::PreInit() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:1694]
UE4Editor!GuardedMain() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\launch\private\launch.cpp:127]
UE4Editor!GuardedMainWrapper() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:134]
UE4Editor!WinMain() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:210]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:253]
kernel32
ntdll