diff --git a/docs/re/mission-freeze-resume-spin.md b/docs/re/mission-freeze-resume-spin.md
index 7e34a64..dedc7a4 100644
--- a/docs/re/mission-freeze-resume-spin.md
+++ b/docs/re/mission-freeze-resume-spin.md
@@ -175,3 +175,41 @@ thread's guest PC on demand (or after N seconds without a frame) would name the
 loop, and `xenia-rs/sylpheed.db` can then say what function it is in. That is a
 `build-canary` run plus a reproduction — the cost is worth stating up front, and
 it is the only avenue that does not involve guessing.
+
+---
+
+## The frozen world is quieter, not silent — the delta measured at last
+
+The measurement [`live_delta.py`](../../tools/re-capture/live_delta.py) was
+written for, taken on a run that froze mid-probe (2026-08-23):
+
+| state | words changed | window | share of the 357.7 MB of data |
+|---|---|---|---|
+| **running** | 1 863 296 | 4 s | 2.08 % |
+| **frozen** | 180 952 – 235 973 | 6 s | 0.20 – 0.26 % |
+
+So a frozen guest is about **12× quieter per second** than a live one, and still
+changing ~30 000 words a second. Whatever is spinning is doing real work.
+
+Where, by 1 MB region, while frozen:
+
+```
+0xbf900000   83 246 words        0xbe000000    5 902
+0xbfa00000   55 515              0xbe300000    3 978
+0xbe100000   15 914              0x70400000    2 371
+0xbe200000    9 882              0x70500000    2 366
+```
+
+The `0x704…`/`0x705…` pages are **guest thread stacks** — every `XThread…Stack:`
+line in the boot log is in `0x70xxxxxx` — which is what a spinning thread's frame
+churn looks like. The two big blocks at `0xbf900000`/`0xbfa00000` are the bulk of
+it, and one visible cluster there is a long run of identical floats stepping
+together (`0x39174083 → 0x39174079` across hundreds of consecutive words), which
+reads like a buffer being refilled rather than a lock being polled.
+
+🔴 **Not yet interpretable**, and the reason is stated rather than glossed: there
+is **no matched region breakdown for the running case** — the control was taken
+before the region summary existed, so "these regions are busy while frozen" has
+nothing to be compared against. The regions may simply be the busiest regions in
+the game at all times. That comparison is one run away and is the obvious next
+measurement.