DEFAULT_NEWTON_MAX_ITERATIONS

const DEFAULT_NEWTON_MAX_ITERATIONS: 1024 = 1024

Defined in: packages/runtime/src/reference-runtime.ts:302

How long a nonlinear block’s Newton loop may keep trying before the iterate it has is the answer it returns.

A correctness bound, and nothing else. It stopped being the admission gate’s cost input on 2026-09-09 (RealtimeBudget.budgetedIterationsPerSample); while it was both, no value could satisfy both, which is why it sat at 64 below the requirement of several legitimate circuits.

64 was too low, and truncating does not merely return a worse answer. It leaves a residual that re-seeds the next sample, so the packet never recovers: moogerfooger-mf-102 needs 183 iterations once and then 2.1 per sample forever after, but capped at 64 it burned all 64 on every sample of a ten-second render — and boss-tw-1 shipped audio 11,900x too loud for the same reason.

The bound is 801 — fender-twin-reverb’s one-off transient, with mxr-blue-box at 356 — so this sits above the observed maximum with headroom, because a bound equal to the population maximum is a coincidence rather than a bound.