UE 5.1.1 shader compiler crashing upon opening map

On a map that was working fine up until 2 days ago, my editor now crashes when opening that map.

The following error text is in my log after a crash:

[2023.09.22-22.09.41:651][580]LogShaderCompilers: Error: SCW 1 Queued Jobs, Finished 0 single jobs
[2023.09.22-22.09.41:651][580]LogShaderCompilers: Error: Job 0 [Single] M_Base_TextureVariation/Default/FLandscapeFixedGridVertexFactory/FLandscapeGrassWeightVS/0:/Engine/Private/LandscapeGrassWeight.usf VF ‘FLandscapeFixedGridVertexFactory’ Type ‘FLandscapeGrassWeightVS’ ‘/Engine/Private/LandscapeGrassWeight.usf’ Entry ‘VSMain’ Permutation 0
[2023.09.22-22.09.41:744][580]LogWindows: Error: appError called: Fatal error: [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\ShaderCompiler\ShaderCompiler.cpp] [Line: 1227]
ShaderCompileWorker crashed!
Assertion failed: bDirectoryExists [File:D:\build++UE5\Sync\Engine\Source\Runtime\RenderCore\Private\ShaderCore.cpp] [Line: 1757]
FPaths::DirectoryExists(L:/00-Projects/RMRP RENDERS NEW/RMRP/Intermediate/ShaderAutogen L:/00-Projects/RMRP RENDERS NEW/RMRP/Intermediate/ShaderAutogen) DRONE-PC
0x00007fff6c983423 ShaderCompileWorker-RenderCore.dll!AddShaderSourceDirectoryMapping()
0x00007ff60cc6a8a7 ShaderCompileWorker.exe!FWorkLoop::ProcessInputFromArchive()
0x00007ff60cc6666d ShaderCompileWorker.exe!FWorkLoop::Loop()
0x00007ff60cc63cc0 ShaderCompileWorker.exe!GuardedMain()
0x00007ff60cc63fad ShaderCompileWorker.exe!GuardedMainWrapper()
0x00007ff60cc747ed ShaderCompileWorker.exe!wmain()
0x00007ff60cc75dfc ShaderCompileWorker.exe!__scrt_common_main_seh()
0x00007fffe4ea7344 KERNEL32.DLL!UnknownFunction
0x00007fffe52226b1 ntdll.dll!UnknownFunction

[2023.09.22-22.09.41:744][580]LogWindows: Windows GetLastError: The operation completed successfully. (0)
[2023.09.22-22.09.44:149][582]LogShaderCompilers: Display: ================================================
[2023.09.22-22.09.44:149][582]LogShaderCompilers: Display: === FShaderJobCache stats ===
[2023.09.22-22.09.44:149][582]LogShaderCompilers: Display: Total job queries 209, among them cache hits 6 (2.87%)
[2023.09.22-22.09.44:149][582]LogShaderCompilers: Display: Tracking 114 distinct input hashes that result in 92 distinct outputs (80.70%)
[2023.09.22-22.09.44:149][582]LogShaderCompilers: Display: RAM used: 0.36 MB (0.00 GB) of 3276.80 MB (3.20 GB) budget. Usage: 0.01%
[2023.09.22-22.09.44:149][582]LogShaderCompilers: Display: === Shader Compilation stats ===
[2023.09.22-22.09.44:149][582]LogShaderCompilers: Display: Shaders Compiled: 0
[2023.09.22-22.09.44:149][582]LogShaderCompilers: Display: Jobs assigned 8, completed 0 (0.00%)
[2023.09.22-22.09.44:149][582]LogShaderCompilers: Display: Time job spent in pending queue: average 0.06 s, longest 0.07 s
[2023.09.22-22.09.44:149][582]LogShaderCompilers: Display: Time at least one job was in flight (either pending or executed): 0.00 s
[2023.09.22-22.09.44:149][582]LogShaderCompilers: Display: Jobs were issued in 8 batches (only local compilation was used), average 1.00 jobs/batch
[2023.09.22-22.09.44:149][582]LogShaderCompilers: Display: ================================================
[2023.09.22-22.09.44:149][582]LogThreadingWindows: Error: Runnable thread ShaderCompilingThread crashed.
[2023.09.22-22.09.44:153][582]LogWindows: Error: === Critical error: ===
[2023.09.22-22.09.44:153][582]LogWindows: Error:
[2023.09.22-22.09.44:153][582]LogWindows: Error: Fatal error: [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\ShaderCompiler\ShaderCompiler.cpp] [Line: 1227]
[2023.09.22-22.09.44:153][582]LogWindows: Error: ShaderCompileWorker crashed!
[2023.09.22-22.09.44:153][582]LogWindows: Error:
[2023.09.22-22.09.44:153][582]LogWindows: Error: Assertion failed: bDirectoryExists [File:D:\build++UE5\Sync\Engine\Source\Runtime\RenderCore\Private\ShaderCore.cpp] [Line: 1757]
[2023.09.22-22.09.44:153][582]LogWindows: Error: FPaths::DirectoryExists(L:/00-Projects/RMRP RENDERS NEW/RMRP/Intermediate/ShaderAutogen L:/00-Projects/RMRP RENDERS NEW/RMRP/Intermediate/ShaderAutogen) DRONE-PC
[2023.09.22-22.09.44:153][582]LogWindows: Error: [Callstack] 0x00007fff6c983423 ShaderCompileWorker-RenderCore.dll!AddShaderSourceDirectoryMapping()
[2023.09.22-22.09.44:153][582]LogWindows: Error: [Callstack] 0x00007ff60cc6a8a7 ShaderCompileWorker.exe!FWorkLoop::ProcessInputFromArchive()
[2023.09.22-22.09.44:153][582]LogWindows: Error: [Callstack] 0x00007ff60cc6666d ShaderCompileWorker.exe!FWorkLoop::Loop()
[2023.09.22-22.09.44:153][582]LogWindows: Error: [Callstack] 0x00007ff60cc63cc0 ShaderCompileWorker.exe!GuardedMain()
[2023.09.22-22.09.44:153][582]LogWindows: Error: [Callstack] 0x00007ff60cc63fad ShaderCompileWorker.exe!GuardedMainWrapper()
[2023.09.22-22.09.44:153][582]LogWindows: Error: [Callstack] 0x00007ff60cc747ed ShaderCompileWorker.exe!wmain()
[2023.09.22-22.09.44:153][582]LogWindows: Error: [Callstack] 0x00007ff60cc75dfc ShaderCompileWorker.exe!__scrt_common_main_seh()
[2023.09.22-22.09.44:153][582]LogWindows: Error: [Callstack] 0x00007fffe4ea7344 KERNEL32.DLL!UnknownFunction
[2023.09.22-22.09.44:153][582]LogWindows: Error: [Callstack] 0x00007fffe52226b1 ntdll.dll!UnknownFunction
[2023.09.22-22.09.44:153][582]LogWindows: Error:
[2023.09.22-22.09.44:153][582]LogWindows: Error:
[2023.09.22-22.09.44:153][582]LogWindows: Error:
[2023.09.22-22.09.44:153][582]LogWindows: Error:
[2023.09.22-22.09.44:153][582]LogWindows: Error:
[2023.09.22-22.09.44:153][582]LogWindows: Error:
[2023.09.22-22.09.44:153][582]LogWindows: Error: [Callstack] 0x00007fff642ec754 UnrealEditor-Engine.dll!SCWErrorCode::HandleGeneralCrash() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\ShaderCompiler\ShaderCompiler.cpp:1228]
[2023.09.22-22.09.44:153][582]LogWindows: Error: [Callstack] 0x00007fff642eecb6 UnrealEditor-Engine.dll!HandleWorkerCrash() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\ShaderCompiler\ShaderCompiler.cpp:1829]
[2023.09.22-22.09.44:153][582]LogWindows: Error: [Callstack] 0x00007fff642da9b7 UnrealEditor-Engine.dll!FShaderCompileUtilities::DoReadTaskResults() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\ShaderCompiler\ShaderCompiler.cpp:1909]
[2023.09.22-22.09.44:153][582]LogWindows: Error: [Callstack] 0x00007fff642cdce2 UnrealEditor-Engine.dll!<lambda_76a0bcd77eeb105d5417577fe1607bb2>::operator()() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\ShaderCompiler\ShaderCompiler.cpp:2698]
[2023.09.22-22.09.44:153][582]LogWindows: Error: [Callstack] 0x00007fff642fa64f UnrealEditor-Engine.dll!FShaderCompileThreadRunnable::ReadAvailableResults() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\ShaderCompiler\ShaderCompiler.cpp:2729]
[2023.09.22-22.09.44:153][582]LogWindows: Error: [Callstack] 0x00007fff642d8a92 UnrealEditor-Engine.dll!FShaderCompileThreadRunnable::CompilingLoop() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\ShaderCompiler\ShaderCompiler.cpp:2986]
[2023.09.22-22.09.44:153][582]LogWindows: Error: [Callstack] 0x00007fff64303eb3 UnrealEditor-Engine.dll!FShaderCompileThreadRunnableBase::Run() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\ShaderCompiler\ShaderCompiler.cpp:2255]
[2023.09.22-22.09.44:153][582]LogWindows: Error: [Callstack] 0x00007fff69615342 UnrealEditor-Core.dll!FRunnableThreadWin::Run() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Windows\WindowsRunnableThread.cpp:149]
[2023.09.22-22.09.44:153][582]LogWindows: Error: [Callstack] 0x00007fff6960d230 UnrealEditor-Core.dll!FRunnableThreadWin::GuardedRun() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Windows\WindowsRunnableThread.cpp:79]
[2023.09.22-22.09.44:153][582]LogWindows: Error: [Callstack] 0x00007fffe4ea7344 KERNEL32.DLL!UnknownFunction
[2023.09.22-22.09.44:153][582]LogWindows: Error: [Callstack] 0x00007fffe52226b1 ntdll.dll!UnknownFunction
[2023.09.22-22.09.44:153][582]LogWindows: Error:
[2023.09.22-22.09.44:153][582]LogWindows: Error: Crash in runnable thread ShaderCompilingThread
[2023.09.22-22.09.44:166][582]LogExit: Executing StaticShutdownAfterError
[2023.09.22-22.09.44:175][582]LogWindows: FPlatformMisc::RequestExit(1)
[2023.09.22-22.09.44:175][582]LogWindows: FPlatformMisc::RequestExitWithStatus(1, 3)
[2023.09.22-22.09.44:175][582]LogCore: Engine exit requested (reason: Win RequestExit)

So far I have tried the following:
-Updated graphics drivers
-Restarted my PC
-Migrated project to 5.2.1 (crashed with similar error)
-Uninstalled, reinstalled 5.1.1
-Deleted DerivedDataCache, Intermediate, and Saved folders from project directory

And I know the following to be true:
-Project is using DirectX 11
-Hardware ray tracing is disabled
-Lumen/Nanite are disabled
-My graphics card is a RTX 2080
-My PC has 64GB RAM
-And 16x i9 CPUs

Greetings @ryanmarizza360

Welcome to the Unreal Engine Forums! I’ll be happy to look into the issue with you. I do have a question up front that I’m curious about. You mentioned that you have a 16x i9 CPU. Is this one of the 13 series? (13700k, 13900k, etc) If so, have you undervolted the CPU at all in the bios, by chance?

The processors are i9-9900K, and have not been undervolted as far as I know.