Unreal Engine Issues

The Console Command list printed by using "Help" misses alot items in 5.6

FD3D12BindlessResourceManager::GrowCPUHeap will cause GPU heap activation whether it's needed or not

The ctor of FD3D12BindlessResourceManager implies that GPU heap activation is intended to occur lazily with ERHIBindlessConfiguration::RayTracingShaders, however any call to FD3D12BindlessResourceMa ...

Enabling STATS causes RenderThread to wait for GPU

The licensee noticed that in Development builds, the Render thread times are suspiciously similar to GPU times, and the same thing happens when enabling FORCE_USE_STATS in Test configuration. The is ...

Missing PSO Precaches in the engine

A licensee wanted to report some missing PSO Precaching they found, which they have fixed locally: 1. UCableComponent doesn't implement CollectPSOPrecacheData or call CheckPSOPrecachingAndBoostPri ...

Performance slowdown when ray tracing is disabled due to SetResidencyPriority

When a game is compiled with ray tracing disabled (D3D12_RHI_RAYTRACING=0) and the GPU the game is running on becomes low on VRAM, frame time is negatively impacted and doesn't recover. The D3D12_RH ...

Bindless Textures in active use are able to be garbage collected

It is possible for textures referenced in the bindless texture data assets that are actively used in materials being rendered in the active viewport to be garbage collected. This results in the mat ...

Fix up GPU breadcrumb labels for Intel performance analysers

A licensee has brought up that the GPU breadcrumbs are incorrectly displayed with traces taken on the Intel GPU Analyzer tools (see screenshot). It looks like the format string is being passed on in ...

Scene with texture collection crashes when dumping a full memreport

A licensee has reported that generating a full memreport of a packaged project which uses a texture collection leads to a crash. ...

Synthetic Benchmark Giving Inconsistent Results

A licensee has noted that the synth benchmark has been giving inconsistent results when they try to find optimal scalability settings for their application. The root cause of this is unclear, but lo ...

Ensure triggered when creating Scene Proxy for GroomComponent

When a room component is added in C++ via the actor constructor, an ensure is triggered from precaching and the groom component. Behavior also observed on UE5/Release-5.5, CL: 40988944 ...