ARMORED CORE VI FIRES OF RUBICON (PPSA06774)

[Tehshortbus]

Status: boots, menus and intro movie at 60 fps, audio works, the first mission is playable at about 9 fps. No stop seen in 5 runs of 182 to 462 s, all exit 0: 3 on main, 2 with one PR each (below).

Build: main da026c7065, no PRs.

Host: CachyOS Linux 7.3.0-4-cachyos, AMD Ryzen 7 5800X (16 threads), 64 GiB, NVIDIA GeForce RTX 4070 SUPER (Selected GPU name=NVIDIA GeForce RTX 4070 SUPER), driver 615.78.08, AC power. Wayland with XWayland.

Dump and conversion:

• eboot.bin, sce_module/libc.prx and sce_module/libSceNpCppWebApi.prx unwrapped with tools/unwrap_self.py, converted with relinker --registry input/eboot.elf app.elf. 2 converted modules.
• The dump has ampr_emu.index at its root but no ampr_assets-*.pak; every file the title opened was present.
• sce_sys/playgo-scenario.json is present; no APS5_PLAYGO_UNLISTED_CHUNKS needed.
• tools/import_audit.py failed on this main with FAIL: more than 256 preprocessor branch combinations in one function (the stub scanner, not the title), so no audit.

Command: APS5_PROFILE_DRAW=1 APS5_PROFILE_GPU=1 APS5_LOG_TIMESTAMPS=1 APS5_TRACE_SUMMARY_EVERY=10 setarch x86_64 -R ./app.elf, default in-game settings. First run with empty caches, later runs warm.

Notes from the log:

• Audio: sound/pck/enus/*.bnk opens fail, but the title then reads its banks from sound/pck/bnk.pck (an AKPK package whose index lists them under the language-neutral entry), music streams from stm_bgm.pck and voices from stm_voice_enus.pck. The misses are the title's loose-file probe. NPC001.bnk is in neither place.
• [trophy]: 30 trophies read; uds00.ucp uses collection and eachLatest aggregations, which are reported as unsupported.

Frame rate in the first mission (warm caches, standing still, 4 × 10 s):

• 9.0 fps, frame p50 110.9 ms, GPU busy 48.4 ms per present, queue worker 0 busy 97 %.
• CPU: about 17,000 draws per second at 40 to 44 µs each. The draw cache hits 1.2 to 2.0 %; about 93 % of its misses differ only in user words/pointers, and the data-only path compiles about 86 % of the stages it looks at. Details and per-PR results: #5609 comment.
• GPU, per present ([gputime]): draws 31.7 ms, shadow publish 4.1 ms, storage write-back 1.2 ms, fills 1.0 ms, DCC clears 0.28 ms.

PRs tried on the same scene: #12478 (bypass never starts here, no change), #10844 (pre-sync waits shorter, under 3 % of the worker, no change). #5609 targets this case but needs a rebase.

Open: no open PR changes the frame rate here yet.

AI-assisted: yes (Claude Code). The interpretation of the draw-cache misses is AI-generated; the numbers are measured.