# UE5 stucks on 9% or 35% Compiling global shader / Processing global shaders **URL:** \ **Category:** Getting Started & Setup\ **Tags:** stuck, unreal-engine, UE5, question\ **Created:** [April 27, 2023, 11:37am UTC](https://forums.unrealengine.com/t/ue5-stucks-on-9-or-35-compiling-global-shader-processing-global-shaders/1146120 "2023-04-27T11:37:53Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![digitalbug](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/digitalbug/32/690424_2.png) [@digitalbug](https://forums.unrealengine.com/u/digitalbug)\ **Post date:** [April 27, 2023, 11:37am UTC](https://forums.unrealengine.com/t/ue5-stucks-on-9-or-35-compiling-global-shader-processing-global-shaders/1146120/1 "2023-04-27T11:37:53Z")
Hey! UE5.1.1 + Oculus VR ![000](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/4/f/74f9904cfecef6abdbd3b274eead0ab9be415541.jpeg) Sometimes UE5 project stucks on editor launch. Editor stucks on 9% or 35% Compiling global shader / Processing global shaders. Killing the editor process and restarting doesn’t help. Sometimes windows restart helps. UE5 prosses is using 0% of CPU. Simply nothing happens even after 3-4h. ![001](https://d3kjluh73b9h9o.cloudfront.net/original/4X/9/3/7/937a59a90ff1f9b2ccc3e55edadfa6811e542990.jpeg) ---
**Author:** ![digitalbug](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/digitalbug/32/690424_2.png) [@digitalbug](https://forums.unrealengine.com/u/digitalbug)\ **Post date:** [April 27, 2023, 12:16pm UTC](https://forums.unrealengine.com/t/ue5-stucks-on-9-or-35-compiling-global-shader-processing-global-shaders/1146120/2 "2023-04-27T12:16:31Z")
upd: I added to DefaultEngine.ini ```auto [core.log] LogDerivedDataCache=All ``` I received next last lines of log ```auto LogDerivedDataCache: VeryVerbose: C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache: Maintenance finished scanning C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache/Buckets/GlobalShaderMap. LogDerivedDataCache: VeryVerbose: C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache: Maintenance finished scanning C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache/Buckets/LegacyNiagaraScriptDerivedData. LogDerivedDataCache: VeryVerbose: C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache: Maintenance finished scanning C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache/Buckets/LegacyNavCollision. LogDerivedDataCache: VeryVerbose: C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache: Maintenance finished scanning C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache/Buckets/LegacyDIST. LogDerivedDataCache: VeryVerbose: C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache: Maintenance finished scanning C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache/Buckets/LegacyChaosGeometryData. LogDerivedDataCache: VeryVerbose: C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache: Maintenance finished scanning C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache/Buckets/FShaderJobCacheShaders. LogDerivedDataCache: VeryVerbose: C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache: Maintenance finished scanning C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache/Buckets/StaticMesh. LogDerivedDataCache: VeryVerbose: C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache: Maintenance finished scanning C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache/Buckets/LegacyMESHDATAKEY. LogDerivedDataCache: VeryVerbose: C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache: Maintenance finished scanning C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache/Buckets/LegacyCARD. LogDerivedDataCache: VeryVerbose: C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache: Maintenance finished scanning C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache/Content. LogDerivedDataCache: VeryVerbose: C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache: Maintenance finished scanning C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache/Buckets/LegacySTREAMEDAUDIO. LogDerivedDataCache: VeryVerbose: C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache: Maintenance finished scanning C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache/Buckets/LegacyTEXTURE. LogDerivedDataCache: VeryVerbose: C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache: Maintenance finished scanning C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache/Buckets/LegacyNIAGARASM. LogDerivedDataCache: VeryVerbose: C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache: Maintenance finished scanning C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache/Buckets/LegacyAudio. LogDerivedDataCache: VeryVerbose: C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache: Maintenance finished scanning C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache/Buckets/MaterialShaderMap. LogDerivedDataCache: VeryVerbose: C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache: Maintenance finished scanning C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache/Buckets/LegacyAnimSeq. LogDerivedDataCache: VeryVerbose: C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache: Maintenance finished scanning C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache/Buckets/LegacyGeometryCollection. LogDerivedDataCache: VeryVerbose: C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache: Maintenance finished scanning C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache/Buckets/LegacySKELETALMESH. LogDerivedDataCache: VeryVerbose: C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache: Maintenance finished scanning C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache/Buckets/BulkDataList. LogDerivedDataCache: C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache: Maintenance finished in +00:00:21.033 and deleted 0 files with total size 0 MiB. Scanned 14135 files in 7951 folders with total size 6213 MiB. LogDerivedDataCache: Verbose: C:/Users/Usr/AppData/Local/UnrealEngine/Common/DerivedDataCache: Maintenance is paused until the next scan at 2023.04.27-15.40.45. ``` ---
**Author:** ![526088](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@526088](https://forums.unrealengine.com/u/526088)\ **Post date:** [April 27, 2023, 1:48pm UTC](https://forums.unrealengine.com/t/ue5-stucks-on-9-or-35-compiling-global-shader-processing-global-shaders/1146120/3 "2023-04-27T13:48:45Z")
I have the same on my old laptop even with UE4. This might happen if you set incorrect settings of your project. to fix it, go to C:\Users\YourUsername\Documents\Unreal Projects\YourProjectFolder\Config. Try to delete DefaultEngine.ini. This will reset all rendering settings of your project to engine’s default and engine or your pc will be able to compile those shaders. ---
**Author:** ![digitalbug](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/digitalbug/32/690424_2.png) [@digitalbug](https://forums.unrealengine.com/u/digitalbug)\ **Post date:** [April 27, 2023, 2:59pm UTC](https://forums.unrealengine.com/t/ue5-stucks-on-9-or-35-compiling-global-shader-processing-global-shaders/1146120/4 "2023-04-27T14:59:04Z")
Nope. It did not help. After deleting the configs, the same freezes ---
**Author:** ![Jimbohalo10](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/jimbohalo10/32/961440_2.png) [@Jimbohalo10](https://forums.unrealengine.com/u/Jimbohalo10)\ **Post date:** [April 27, 2023, 3:12pm UTC](https://forums.unrealengine.com/t/ue5-stucks-on-9-or-35-compiling-global-shader-processing-global-shaders/1146120/5 "2023-04-27T15:12:19Z")
Hi @digitalbug had similar problems with lack of virtual memory in Windows Pagefile.sys which I wrote in other posts [Building Light Causes Unreal Editor to Crash, Freezes At Exporting Light Data 100%](https://forums.unrealengine.com/t/building-light-causes-unreal-editor-to-crash-freezes-at-exporting-light-data-100/497274/1) and here to create bigger pagefile.sys which you will need to reboot PC and here [“Checking global shaders for platform Windows” stuck forever](https://forums.unrealengine.com/t/checking-global-shaders-for-platform-windows-stuck-forever/233326/7) ---
**Author:** ![digitalbug](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/digitalbug/32/690424_2.png) [@digitalbug](https://forums.unrealengine.com/u/digitalbug)\ **Post date:** [April 27, 2023, 3:53pm UTC](https://forums.unrealengine.com/t/ue5-stucks-on-9-or-35-compiling-global-shader-processing-global-shaders/1146120/6 "2023-04-27T15:53:14Z")
Thank you! But nope. I set the virtual memory size to 32 GB and restarted the computer. After several restarts of the editor - 9% freeze ---
**Author:** ![Jimbohalo10](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/jimbohalo10/32/961440_2.png) [@Jimbohalo10](https://forums.unrealengine.com/u/Jimbohalo10)\ **Post date:** [April 27, 2023, 4:01pm UTC](https://forums.unrealengine.com/t/ue5-stucks-on-9-or-35-compiling-global-shader-processing-global-shaders/1146120/7 "2023-04-27T16:01:48Z")
Hi @digitalbug, I need to defragement by drives very often as I build new UE version which need to build compile Shaders try this from the command line REM you need to run tnis in Win Administrator shell C:\> defrag D: /H /M 16 This will run in the background My system disk is an NVRAM SSD where I do all my build, so I need to use the DEFRAG option Optimise to “Trim” my SSD ---
**Author:** ![digitalbug](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/digitalbug/32/690424_2.png) [@digitalbug](https://forums.unrealengine.com/u/digitalbug)\ **Post date:** [April 28, 2023, 11:12am UTC](https://forums.unrealengine.com/t/ue5-stucks-on-9-or-35-compiling-global-shader-processing-global-shaders/1146120/8 "2023-04-28T11:12:16Z")
I found one dependency. If I kill the **OVRServer\_x64.exe** process, then the hung editor starts loading. May be something conflict with oculus. ![66](https://d3kjluh73b9h9o.cloudfront.net/original/4X/e/0/2/e02f9a0756877c7c3b13ff8492befaa93f7838fb.jpeg) ---
**Author:** ![system](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/1/3/713c9d3f58553f0de89543d76a8a3a2779dc9fa4.png) [@system](https://forums.unrealengine.com/u/system)\ **Post date:** [June 22, 2023, 12:29pm UTC](https://forums.unrealengine.com/t/ue5-stucks-on-9-or-35-compiling-global-shader-processing-global-shaders/1146120/9 "2023-06-22T12:29:33Z")
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