When a project is run with these settings in a template project, untracked virtual memory increases.
Cvars
r.GBufferFormat 3
r.Lumen.TraceMeshSDFs 1
r.Lumen.TranslucencyReflections.FrontLayer.EnableForProject 1
r.VirtualTextures 0
Example MemReport 1: (*2025.12.20-00.33.40:916)
MemReport: Begin command "Mem FromReport" LogMemory: Platform Memory Stats for Windows LogMemory: Process Physical Memory: 2125.02 MB used, 4044.38 MB peak LogMemory: Process Virtual Memory: 4639.20 MB used, 5109.24 MB peak LogMemory: Physical Memory: 68027.02 MB used, 193950.56 MB free, 261977.58 MB total LogMemory: Virtual Memory: 83462.16 MB used, 194899.41 MB free, 278361.56 MB total
*MemReport 1 hour later: (*2025.12.20-01.33.14:013)
MemReport: Begin command "Mem FromReport" LogMemory: Platform Memory Stats for Windows LogMemory: Process Physical Memory: 2531.01 MB used, 4044.38 MB peak LogMemory: Process Virtual Memory: 5081.45 MB used, 5199.92 MB peak LogMemory: Physical Memory: 70063.96 MB used, 191913.61 MB free, 261977.58 MB total LogMemory: Virtual Memory: 85960.52 MB used, 192401.06 MB free, 278361.56 MB total OS Allocated: 943.335938mb
Steps to Reproduce
1. Create a development or test package from the attached project.
2. Run it.
3. Used physical memory is written in the "C:\\logs
test_settings_RamLog_for_5_6_1.txt" so check it after several hours. Or use any ram usage tool of your choice.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-358790 in the post.
| 0 |
| Component | UE - Rendering Architecture |
|---|---|
| Affects Versions | 5.6 |
| Created | Dec 20, 2025 |
|---|---|
| Updated | Dec 20, 2025 |