Two standing costs from the interval-stutter investigation, consolidated:
- PUNKTFUNK_STALL_PROBES=0 now opts a box out of the micro-probe engine
(per-GPU 10 Hz fence copies, a parked blocking-DwmFlush waiter, the
5 ms-cadence CPU sentinel). Default stays ON while the field program
runs; off, stall lines keep the driver telemetry and the cheap ETW
present/queue discriminator and only lose the corroborating probe legs
— the verdict matrix already treats an absent probe window honestly.
- The negotiated-depth pin-back stops hammering a display that refuses
the flip: it was 4 CCD writes + 8 display-config queries per second,
forever, all on the session-global display-config lock. After ~2 s of
eager retries it re-attempts every ~4 s — still self-healing, without
the drumbeat.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
enricobuehlerandClaude Fable 5
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