Extreme lag in VAB/SPH when using Scrapyard

[Piff_paff]

KSP: 1.12.3.3173 x64, Win10

Problem: Extreme lag in VAB/SPH after attaching pretty much any engine. Once I have an engine and fuel tank attached, when trying to attach any other part, the game gets extremely laggy. If I remove all the engines again, the game is perfectly fine again. No performance issues in flight. The problem didn't occur on a new game, only after quite some time in career. If I remove ScrapYard and OhScrap, the issue disappears, but if I remove only ohScrap and leave ScrapYard as is, then I still get the issue.

Mods installed:

Quote

Antenna Helper (AntennaHelper 2:1.0.7.7)
AntennaSleep (AntennaSleep 1.1)
Astronomer's Visual Pack (AstronomersVisualPack 3:v4.12)
Astronomer's Visual Pack-4k Textures (AVP-4kTextures v1.12)
AtmosphereAutopilot (Fly-By-Wire) (AtmosphereAutopilot v1.5.18)
B9 Part Switch (B9PartSwitch v2.20.0)
Background Resources (BackgroundResources 1:v0.18.0.0)
BetterBurnTime (BetterBurnTime 1.10)
BetterTimeWarpContinued (BetterTimeWarpCont 2.3.13)
Breaking Ground (BreakingGround-DLC 1.7.1)
Bureaucracy (Bureaucracy 1.5.1)
Chatterer (Chatterer 0.9.99)
Chatterer Extended (ChattererExtended 0.6.2)
ClickThrough Blocker (ClickThroughBlocker 1:0.1.10.17)
CommNet Antennas Consumptor (CommNetAntennasConsumptor 3.5.5)
CommNet Antennas Extension (CommNetAntennasExtension 2.1.7)
CommNet Relays (ContractConfigurator-CommNetRelays v2.1.0)
Community Category Kit (CommunityCategoryKit v5.2.0.0)
Community Resource Pack (CommunityResourcePack 1.4.2)
Community Tech Tree (CommunityTechTree 1:3.4.4)
Community Terrain Texture Pack (CommunityTerrainTexturePack 1:1.0.4)
Connected Living Space (ConnectedLivingSpace v2.0.2.0)
Contract Configurator (ContractConfigurator 1.30.5)
Contract Pack: Bases and Stations Reborn (ContractConfigurator-KerbinSpaceStation 2:3.7.3)
Contract Pack: Clever Sats (ContractConfigurator-CleverSats 1.4)
Contract Pack: Exploration Plus (ContractConfigurator-ExplorationPlus 2.0.1)
Contract Pack: Field Research (ContractConfigurator-FieldResearch 1.2.2)
Contract Pack: Kerbal Academy (ContractConfigurator-KerbalAcademy 1.1.10)
Contract Pack: Research Advancement Division (ResearchAdvancementDivision 1.2.0)
Contract Pack: Tourism Plus (ContractConfigurator-Tourism 1.5.2)
Crew Light (CrewLight 1:1.20.1.1)
Critical Temperature Gauge (CriticalTemperatureGauge 1.12.0.0)
Crowd Sourced Flags (CrowdSourcedFlags 1.55.5)
Crowd Sourced Science (CrowdSourcedScience v6.0)
Custom Barn Kit (CustomBarnKit 1.1.22.0)
Deployable Engines Plugin (DeployableEngines 1.3.1)
Distant Object Enhancement /L (DistantObject v2.1.1.6)
Distant Object Enhancement /L default config (DistantObject-default v2.1.1.6)
Docking Port Alignment Indicator (DockingPortAlignmentIndicator 6.10.0.0)
Docking Port Sound FX (DockingPortSoundFX v2.1.12)
Dynamic Battery Storage (DynamicBatteryStorage 2:2.2.5.0)
Easy Vessel Switch (EVS) (EasyVesselSwitch 2.3)
Editor Extensions Redux (EditorExtensionsRedux 3.4.3.5)
EditorTime (EditorTime KSP1.4.1)
Engine Lighting Relit (EngineLightRelit 1.6.3.2)
Environmental Visual Enhancements Redux (EnvironmentalVisualEnhancements 3:1.11.6.1)
ExceptionDetectorUpdated (EDU) (ExceptionDetectorUpdated 0.1.1_alpha)
Firespitter Core (FirespitterCore v7.17)
Flag Pack (FlagPack v1.1.1)
Flight Tracker (FlightTracker 3.0.0.3)
Harmony 2 (Harmony2 2.0.4.0)
HeapPadder (HeapPadder 0.0.2.2)
Hide Empty Tech Tree Nodes (HideEmptyTechNodes 1.3.0)
JX2Antenna (JX2Antenna 2.0.5)
Kabrams Sun Flare Blue Medium (KabramsSunFlaresPack-Blue-Medium 001)
Kerbal Attachment System (KAS 1.10)
Kerbal Changelog (KerbalChangelog v1.4.2)
Kerbal Construction Time (KerbalConstructionTime 1:1.4.11.2)
Kerbal Flight Indicators (KerbalFlightIndicators R20)
Kerbal Health (KerbalHealth v1.6.1)
Kerbal Improved Save System (KerbalImprovedSaveSystem v2.4.2)
Kerbal Inventory System (KIS 1.29)
Kerbal Inventory System - No Fun (KerbalInventorySystemNoFun 1:0.1.11.0)
Kerbal Krash System (KerbalKrashSystem 2:0.5.1)
Kerbal Reusability Expansion (SpaceXLegs 2.9.2)
Konstruction (Konstruction 1.4.0)
Kopernicus Planetary System Modifier (Kopernicus 2:release-1.12.1-90)
KRASH - Kerbal Ramification Artifical Simulation Hub (simulation mod for KSP) (KRASH 0.5.33.5)
KSP Community Fixes (KSPCommunityFixes 1.11.2)
MagiCore (MagiCore 1.3.2.5)
Making History (MakingHistory-DLC 1.12.1)
MandatoryRCS Part Pack (MandatoryRCSPartPack 1.4)
MechJeb 2 (MechJeb2 2.14.1.0)
Milkyway Skybox - SpaceEngine (Milkyway-Skybox-SpaceEngine 1.0)
ModularFlightIntegrator (ModularFlightIntegrator 1.2.10.0)
Module Manager (ModuleManager 4.2.1)
Near Future Construction (NearFutureConstruction 1.3.1)
Near Future Electrical (NearFutureElectrical 1.2.3)
Near Future Electrical - Decaying RTGs (NearFutureElectrical-DecayingRTGs 1.2.3)
Near Future Electrical Core (NearFutureElectrical-Core 1.2.3)
Near Future IVA Props (NearFutureProps 1:0.7.1)
Near Future Launch Vehicles (NearFutureLaunchVehicles 2.2.0)
Near Future Propulsion (NearFuturePropulsion 1.3.5)
Near Future Solar (NearFutureSolar 1.3.2)
Near Future Solar Core (NearFutureSolar-Core 1.3.2)
Near Future Spacecraft (NearFutureSpacecraft 1.4.3)
OhScrap (OHS) (OhScrap 2.2.0.0)
Outer Planets Mod (OuterPlanetsMod 2:2.2.10)
Parallax (Parallax 1.3.1)
Parallax - Stock Planet Textures (Parallax-StockTextures 1.3.1)
Parallax for OPM (Parallax-OuterPlanetsMod v1.0)
PersistentRotation Upgraded (PersistentRotationUpgraded 1.9.1.7)
Planes With Purposes (ContractConfigurator-PlanesWithPurposes 1.5)
PlanetShine (PlanetShine 0.2.6.6)
PlanetShine - Default configuration (PlanetShine-Config-Default 0.2.6.6)
Project Manager (ProjectManager v2.4)
QuickSearch (QuickSearch 1:3.3.1)
RCS Build Aid (RCSBuildAid v1.0.6)
Real Plume (RealPlume 2:v13.3.2)
Real Plume - Stock Configs (RealPlume-StockConfigs v4.0.8)
RealChute Parachute Systems (RealChute v1.4.8.3)
RealHeat (RealHeat v5.1)
Reentry Particle Effect Renewed (ReentryParticleEffect 1.9.1.1)
RemoteTech Redev Antennas (RemoteTechRedevAntennas 0.1.1)
ReStock (ReStock 1.4.3)
ReStock+ (ReStockPlus 1.4.3)
Rocket Sound Enhancement (RocketSoundEnhancement 0.7.2)
Rocket Sound Enhancement - Default (RocketSoundEnhancement-Config-Default 1.0.2)
SCANsat (SCANsat v20.4)
Scatterer (Scatterer 3:v0.0834)
Scatterer Default Config (Scatterer-config 3:v0.0834)
ScienceAlert ReAlerted (ScienceAlert 1.9.10)
ScrapYard (SYD) (ScrapYard 2.2.1.0)
SmokeScreen - Extended FX Plugin (SmokeScreen 2.8.14.0)
SpaceTux Library (SpaceTuxLibrary 0.0.8.4)
StageRecovery (StageRecovery 1.9.5.4)
Station Keeping (StationKeeping 1:0.2.2.2)
Stock Waterfall Effects (StockWaterfallEffects 0.6.3)
Stockalike Station Parts Expansion Redux (StationPartsExpansionRedux 2.0.6)
Strategia (Strategia 1.8.0)
Surface Mounted Lights (surfacelights 1.19)
TAC Life Support (TACLS) (TACLS 1:v0.18.0.0)
TextureReplacer (TextureReplacer v4.5.3)
The Janitor's Closet (JanitorsCloset 0.3.7.8)
Toolbar Controller (ToolbarController 1:0.1.9.6)
Trajectories (Trajectories v2.4.3)
TUFX (TUFX 1.0.2.3)
Un Kerballed Start (UnKerballedStart 1.3.0)
Universal Storage II Finalized (UniversalStorage2 4.0.0.7)
USI Core (USI-Core 1.4.0)
USI Kolonization Systems (MKS/OKS) (UKS 1:1.4.1)
USI Tools (USITools 1.4.0)
Waterfall - Restock (WaterfallRestock 0.2.3)
Waterfall Core (Waterfall 0.8.1)
Waypoint Manager (WaypointManager 2.8.3.3)
Zero MiniAVC (ZeroMiniAVC 1:1.1.2.4)

 

Reproduction steps: in the problem description

 

Log:

In KSP.log, there's an enormous amount of duplicated log entries like:

Quote

[ERR 15:39:53.642] [FlowGraph]: Graph already contains item! Part turboJet with id 4290232878

[ERR 15:39:53.645] [FlowGraph]: Graph already contains item! Part turboJet with id 4290232878

[ERR 15:39:53.648] [FlowGraph]: Graph already contains item! Part turboJet with id 4290232456

[ERR 15:39:53.651] [FlowGraph]: Graph already contains item! Part turboJet with id 4290232456

[ERR 15:39:53.653] [FlowGraph]: Graph already contains item! Part structuralWing4 with id 4290277240

[ERR 15:39:53.656] [FlowGraph]: Graph already contains item! Part structuralWing4 with id 4290277240

[ERR 15:39:53.659] [FlowGraph]: Graph already contains item! Part structuralWing4 with id 4290276308

[ERR 15:39:53.662] [FlowGraph]: Graph already contains item! Part structuralWing4 with id 4290276308

 

 

I could just remove ohScrap and ScrapYard, but I hate playing without them :|

 

Update: After I removed both scrapYard, and ohScrap (cleaning all folders completely), and then reinstalled them, it looks fine, but I expect the problem will come back after some time.

Edited April 18, 2022 by Piff_paff