Sumo Digital Ltd. has reported that the synthetic benchmark has skewed GPUIndex scores when changing graphics scalability settings (i.e. r.LumenScreenProbeGather.DownsampleFactor). They are currently using the benchmark to setup sensible settings for a title they are shipping soon.
Use these console commands inside the editor:
r.Lumen.ScreenProbeGather.DownsampleFactor 16
r.Lumen.ArGlobalTraceDistance 160000
r.Lumen.ArGlobalFinalGatherQuality 8
SynthBenchmark
r.Lumen.ScreenProbeGather.DownsampleFactor 32
r.Lumen.ArGlobalTraceDistance 40000
r.Lumen.ArGlobalFinalGatherQuality 2
SynthBenchmark
Examine the log file to view the results.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-250125 in the post.
| 1 |
| Component | UE - Rendering - Architecture - RHI |
|---|---|
| Affects Versions | 5.4 |
| Created | Feb 19, 2025 |
|---|---|
| Updated | May 28, 2026 |