I’ve benchmarked SoA on a couple of systems, I’ve collected logs from Radeon GPU Profiler and there is likely a clear reason why this dungeon after 9.0.5 has low FPS for some users.
So for RX 460 4GB and 1050Ti the FPS will be quite low while for stronger GPUs like even GTX 1070 at 1080p or RTX 3070 at 3440x1440 it will be lower than before but still “overkill” in most cases.
RX 460 4GB + i5-9400F average FPS at the entrance:
- SoA: 37,6 FPS
- HoA: 43,1 FPS
- ToP: 52,6 FPS
- Necrotic Wake: 84,7 FPS
- De Other Side: 120 FPS
If you collect data with Radeon GPU Profiler the amount of GPU events per frame is similar, amount of shaded vertices is similar… but when you compare amount of shaded pixels per frame then SoA is top at 125 million pixels (121 million for Ardenweald test spot, 60 million for Theater and 29 million for Necrotic Wake).
It looks like SoA compared to other dungeons shades way more pixels thus lower performance, way lower for iGPU/dGPU with low pixel fill rate/VRAM bandwidth.
Similar bug was in Rustbolt in BfA when after a hotfix the FPS dropped noticeably and the profiler also showed vastly more pixels shaded.
Full analysis on: