Unreal Engine Issues

UE-150571

Running VR Template with DirectX11 and Instanced Stereo causes massive memory leaks

Running VR Template with DirectX11 and Instanced Stereo causes massive memory leaks

Description

Massive memory leak occurs when using dx11 in the VR Template. The memory leak maxed at 18GB after hour and a half. This issue does not happen with dx12, Metal or Vulkan. Issue does not occur when Instance Stereo is turned off.

Steps to Reproduce
  1. Open UE5 and create a VR Template
  2. Set default RHI to DirectX11
  3. Restart Engine
  4. Open task manager, click back into the engine's viewport
  5. Monitor for an hour

Actual Result: Massive memory leak occurs within the first hour of idle engine.
Expected Result: Engine caps the memory use so no memory leaks occur

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Fixed
ComponentUE - Graphics Features
Affects Versions5.0
Target Fix5.0.3
Fix Commit20647711
Main Commit20656858
Release Commit20647711
CreatedApr 28, 2022
ResolvedJun 14, 2022
UpdatedJan 25, 2023
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