Game Performance Profiler

Use this skill when the main question is "what packet do we trust, which bottleneck family is most likely, and what is the next capture or review artifact worth producing?"

The job is not to dump generic optimization advice. The job is to normalize the current packet, choose one operating mode, name one primary bottleneck family, recommend the smallest next capture that can improve confidence, and return one profiling artifact teams can actually act on.

Read references/mode-selection-and-route-outs.md before handling an unfamiliar request shape. Read references/capture-packets-and-benchmark-routes.md before designing a reproducible pass. Read references/device-review-and-steam-deck.md before trusting editor numbers for handheld or target-device review. Read references/profiling-patterns.md before classifying weak or ambiguous evidence. Read references/escalation-ladder.md before jumping from screenshots or stat packets to deeper engine or GPU tools.

When to use this skill

• Unity or Unreal projects with low FPS, frame-time spikes, hitches, or performance regressions where the bottleneck is not yet isolated
• Profiler screenshots, stat unit / stat gpu output, Unreal Insights traces, overlay captures, route notes, or benchmark complaints that need interpretation
• Steam Deck, handheld, mobile, console, VR, or low-spec review requests where packaged-on-device behavior matters more than editor impressions
• Requests for a profiling plan, benchmark route, device review packet, CPU/GPU split note, or escalation choice instead of immediate code edits
• Mixed performance packets where the next owner is still unclear and the first job is choosing between quick packet, deeper trace, or neighboring game skill