unreal-performance
Performance engineering in Unreal Engine 5.8
Version 0.1 (2026-09-24), part of Unreal Engine Expert Skills v0.1.
Expert level here means milliseconds per stage, not frames per second: classify the bound with one honest capture, explain the worst frame by the thread that works rather than the one that waits, fix in the order of measured size, and prove the result with repeated runs on the same route and build, hitches judged apart from the average. The performance engineer owns measurement, diagnosis and proof; most fixes go back to the teammate who owns the content.
REQUIRED BACKGROUND: unreal-expert (channels, review loop, 5.8 traps).
Status (2026-09-24): scripts/ue_perf.py is not yet run in Unreal; its pure layers pass tests/code/unreal-performance/run_all.sh (50 offline tests on synthetic captures). Every UE name is [verify]; first run: job_probe_perf.py (procedures P0).