diff --git a/hancore.shibumi.network/Service.qml b/hancore.shibumi.network/Service.qml
index 079d4bd..180bf9d 100644
--- a/hancore.shibumi.network/Service.qml
+++ b/hancore.shibumi.network/Service.qml
@@ -540,9 +540,17 @@ Item {
     if (!/^(?:\d+(?:\.\d*)?|\.\d+)$/.test(raw)) return
     const value = Number(raw)
     if (!isFinite(value) || value < 0) return
+    if (speedTestPhase !== "down" && speedTestPhase !== "up") return
+    // The backend streams one sample per second for the whole phase and the
+    // early samples land while the transfer is still ramping. Keep the peak so
+    // the reported figure reflects the link rather than whichever sample
+    // happened to arrive last before the phase timer fired.
+    const current = speedTestPhase === "down"
+      ? speedTestDownloadMbps : speedTestUploadMbps
+    if (current !== "" && Number(current) >= value) return
     const normalized = String(value)
     if (speedTestPhase === "down") speedTestDownloadMbps = normalized
-    else if (speedTestPhase === "up") speedTestUploadMbps = normalized
+    else speedTestUploadMbps = normalized
   }
 
   function startSpeedTestPhase(phaseValue) {
diff --git a/tests/fixtures/omarchy-network-speedtest-ramp b/tests/fixtures/omarchy-network-speedtest-ramp
new file mode 100755
index 0000000..4b24cee
--- /dev/null
+++ b/tests/fixtures/omarchy-network-speedtest-ramp
@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+
+# Emits a ramping sample stream whose final value is not the peak, mirroring a
+# real transfer that starts in TCP slow-start and dips before the phase ends.
+
+set -euo pipefail
+
+case "${1:-}" in
+  down) samples=(120 880 210) ;;
+  up) samples=(45 310 90) ;;
+  *)
+    printf 'unexpected speed-test phase\n' >&2
+    exit 2
+    ;;
+esac
+
+trap 'exit 0' TERM INT
+
+for value in "${samples[@]}"; do
+  printf '%s\n' "$value"
+  sleep 0.05
+done
+
+while true; do
+  sleep 0.1
+done
diff --git a/tests/network-plugin-regression.sh b/tests/network-plugin-regression.sh
index e3cfc3e..576b1f0 100755
--- a/tests/network-plugin-regression.sh
+++ b/tests/network-plugin-regression.sh
@@ -35,7 +35,8 @@ install -m 0755 "$repo_root/tests/fixtures/omarchy-network-speedtest" \
   "$repo_root/tests/fixtures/omarchy-network-speedtest-fail" \
   "$repo_root/tests/fixtures/omarchy-network-speedtest-empty" \
   "$repo_root/tests/fixtures/omarchy-network-speedtest-malformed" \
-  "$repo_root/tests/fixtures/omarchy-network-speedtest-resistant" "$tmpdir/bin/"
+  "$repo_root/tests/fixtures/omarchy-network-speedtest-resistant" \
+  "$repo_root/tests/fixtures/omarchy-network-speedtest-ramp" "$tmpdir/bin/"
 install -m 0755 "$repo_root/tests/fixtures/network-bin/omarchy-network-status" \
   "$repo_root/tests/fixtures/network-bin/nmcli" "$tmpdir/bin/"
 
diff --git a/tests/network-plugin-smoke.qml b/tests/network-plugin-smoke.qml
index 2f391ef..6a3d2b0 100644
--- a/tests/network-plugin-smoke.qml
+++ b/tests/network-plugin-smoke.qml
@@ -170,6 +170,14 @@ ShellRoot {
     speedTestPhaseDuration: 10000
   }
 
+  Network.Service {
+    id: rampSpeedService
+    bar: fakeBar
+    panelComponent: currentNetworkPanelComponent
+    speedTestExecutable: "omarchy-network-speedtest-ramp"
+    speedTestPhaseDuration: 1500
+  }
+
   Loader {
     id: immediateDestructionLoader
     active: false
@@ -364,6 +372,19 @@ ShellRoot {
             || destructionSpeedLoader.item !== null)
           return root.fail("active speed-test service survived Loader teardown")
         if (root.destructionTicks < 140 || !root.restartContractPassed) return
+        if (!rampSpeedService.ready || !rampSpeedService.runSpeedTest())
+          return root.fail("ramping inline speed-test startup")
+        root.speedPhase = 11
+        return
+      }
+
+      if (root.speedPhase === 11) {
+        if (rampSpeedService.speedTestRunning) return
+        if (rampSpeedService.speedTestPhase !== ""
+            || rampSpeedService.speedTestDownloadMbps !== "880"
+            || rampSpeedService.speedTestUploadMbps !== "310"
+            || rampSpeedService.speedTestError !== "")
+          return root.fail("ramping inline speed-test peak retention")
         root.speedContractPassed = true
       }
     }