Development Platform & Builds

Debugging, Optimization, & Profiling Looking for discussions on debugging, optimizing and profiling your projects? This is the place for you. XR Development All things virtual, augmented, and mixed reality. Mobile For mobile development discussions, including Android, iOS, and beyond. Please use appropriately named TAGS. Cloud Marketplace VM Our Cloud Marketplace Virtual Machines with Unreal Engine come pre-loaded with the latest release of UE and all its prerequisites, so you can get straight to creating in the cloud with no downloads or installs. Use it as a starting point for your team’s virtual workstations or other cloud-driven content creation pipelines for virtual production, gaming, automotive design, digital twins, and more.

Topic	Replies	Views	Activity
[Engine Bug] Instanced Stereo Rendering + Sequencer and Cinecam. XR Development unreal-engine	7	76	February 3, 2026
Frequent but Intermittent crashes on IOS devices, 5.5.4 Mobile question , unreal-engine , Epic-Pro-Support	9	152	February 3, 2026
Performance issues with Nanite (Unreal Engine 5.7) Debugging, Optimization, & Profiling Nanite , question , Rendering , Optimization , Graphics , unreal-engine	1	12	February 3, 2026
Turnkey returned error code 1 - Unreal Engine 5.6.1 source code. Debugging, Optimization, & Profiling unreal-engine , Engine-Source-Code	3	107	February 3, 2026
Building HLOD meshes from command line (not for WP)? Platform & Builds question , console-commands , unreal-engine , command-line	0	4	February 3, 2026
Error when launching Engine. XR Development question , unreal-engine	19	5837	February 3, 2026
Backend dependency returned unexpected error errors.com.epicgames.not_found Platform & Builds question , editor , bug-report , fortnite , unreal-editor-for-fortnite , fortnite-creative	12	1362	February 2, 2026
Intermittent black screen when running packaged shipping build (Windows) Platform & Builds question , unreal-engine	0	9	February 2, 2026
Problem with UE5.4 export Platform & Builds question , editor , unreal-engine	1	42	February 2, 2026
How do I get my AI to shoot? Debugging, Optimization, & Profiling question , unreal-engine	1	9	February 2, 2026
Package Build Displays Black Materials Platform & Builds question , Shaders , Rendering , build , unreal-engine , Packaging , compiling-shaders	7	30	February 2, 2026
Cant build my game anymore. I think it has to do something with the UnrealDrive plugin. Platform & Builds question , unreal-engine	1	11	February 1, 2026
Cook Error (ensure condition) Platform & Builds question , error , unreal-engine , Cooking , Packaging , load-error	3	1190	February 1, 2026
[Mutable] Crash in MeshApplyShape() in packed game Debugging, Optimization, & Profiling question , crash , bug-report , Plugins , memory , unreal-engine , Packaging , access-violation	1	21	February 1, 2026
How do I set a FPS limit on a packaged game? Platform & Builds question , packaging-projects , fps , Frame-Rate , unreal-engine	9	15374	February 1, 2026
Google Play compatibility issue: "Does not support framework version: 34 and above" (UE 5.4 & 5.7) Mobile Android , question , version , unreal-engine , Google-Play , SDK , SDKs	0	3	February 1, 2026
Google Play compatibility issue: "Does not support framework version: 34 and above" (UE 5.4 and 5.7) Mobile Android , question , version , unreal-engine , Google-Play , SDK , Platform-SDKs	0	6	February 1, 2026
Background Blur Crash with 5.7 and Instanced Stereo XR Development bug-report , unreal-engine	6	158	February 1, 2026
System.ArgumentException: Path fragment '"Content/\351\237\263\351\242\221/Cheetah\302\240Mobile_Games_-_\...\265.uasset"' contains invalid directory separators Mobile question , editor , CPP , UE4 , unreal-engine	16	5619	February 1, 2026
Is there any optimization sense in Instanced Static Mesh with nanite? Debugging, Optimization, & Profiling Nanite , question , Optimization , Instanced-Mesh , unreal-engine	14	11	January 31, 2026
UE5.6 crashes immediately on startup Platform & Builds question , crash , unreal-engine , UE5	32	9294	January 31, 2026
Error opening asset on 5.6 - bCustomPropertyListForPostConstructionInitialized - Custom Property List Not Initialized Platform & Builds question , unreal-engine , Epic-Pro-Support	25	662	January 31, 2026
Unreal Engine 5, Android game Failed to open descriptor file Debugging, Optimization, & Profiling Android , question , packaging-projects , unreal-engine , Packaging , UE5-0	14	8119	January 31, 2026
unreal keep crashing my whole pc Debugging, Optimization, & Profiling question , crash , bug-report , unreal-engine	1	15	January 31, 2026
UE4.27 和 5.0 版本在使用 HtcVive VR 设备调试模式运行一次后卡顿（极其），系统 win10x64, 64G内存 ,RTX3070Ti显卡 XR Development VR , question , unreal-engine	3	668	January 31, 2026
How to update steam achievement progress? Platform & Builds question , Steam , unreal-engine , steamworks	7	4230	January 30, 2026
Projects across multiple computers Platform & Builds question , unreal-engine	1	34	January 30, 2026
UEFN/Fortnite optimization is broken Debugging, Optimization, & Profiling fortnite , unreal-editor-for-fortnite , fortnite-creative	0	4	January 30, 2026
How to solve packaging errors Platform & Builds question , unreal-engine	1	88	January 30, 2026
UE 5.7.1 (GitHub source): Android Vulkan crash [VK_ERROR_FEATURE_NOT_PRESENT] Mobile question , unreal-engine	2	89	January 29, 2026