diff --git a/docs/re/ui-keyframe-time-unit.md b/docs/re/ui-keyframe-time-unit.md
index 0c8237df..ec47c536 100644
--- a/docs/re/ui-keyframe-time-unit.md
+++ b/docs/re/ui-keyframe-time-unit.md
@@ -430,9 +430,13 @@ there is no way to select the old reading today, and nothing to set.**
 
 ## ⚠️ 2026-08-30 — "the game presents at 27.6 fps" is not separated from "my container runs the guest slow"
 
-`sylpheed-port` warned that their boot timings carry a host deficit — 146.6 s of
-wall clock for 137.44 s of media, **+6.7 %**, because 720p Theora decodes below
-real time on a box with no GPU — and that any comparison between their seconds and
+`sylpheed-port` warned that their boot timings carry a host deficit — three `ADV`
+runs at 146.42 / 146.60 / 140.77 s against 137.44 s of media, i.e.
+**+2.4 %…+6.7 %, n=3, load-dependent** (it reached this page first as a flat
+"+6.7 %"; they corrected it to a spread). ⚠️ And it is a **lower bound measured
+under skipping**: their player presents only **28–47 %** of the media's frames, so
+the deficit is what remains *after* dropping three frames in four on the light
+clip — and that any comparison between their seconds and
 mine must go through **media length, not wall clock**. Checking whether that
 reaches this page: **it does, and to the page's own headline.**