diff --git a/samples/birp-multipass/Packages/manifest.json b/samples/birp-multipass/Packages/manifest.json
index a0e38ee..d2ce55f 100644
--- a/samples/birp-multipass/Packages/manifest.json
+++ b/samples/birp-multipass/Packages/manifest.json
@@ -1,6 +1,6 @@
 {
   "dependencies": {
-    "com.displayxr.unity": "https://github.com/DisplayXR/displayxr-unity.git#upm/v2.12.0",
+    "com.displayxr.unity": "https://github.com/DisplayXR/displayxr-unity.git#upm/v2.12.1",
     "com.unity.multiplayer.center": "1.0.1",
     "com.unity.ugui": "2.0.0",
     "com.unity.xr.management": "4.5.2",
diff --git a/samples/birp-multipass/Packages/packages-lock.json b/samples/birp-multipass/Packages/packages-lock.json
index f1e06be..5562112 100644
--- a/samples/birp-multipass/Packages/packages-lock.json
+++ b/samples/birp-multipass/Packages/packages-lock.json
@@ -1,14 +1,5 @@
 {
   "dependencies": {
-    "com.displayxr.unity": {
-      "version": "https://github.com/DisplayXR/displayxr-unity.git#upm/v2.12.0",
-      "depth": 0,
-      "source": "git",
-      "dependencies": {
-        "com.unity.xr.management": "4.4.0"
-      },
-      "hash": "d1f0250527d6bc7da17c952a77dcdf4351ac02a5"
-    },
     "com.unity.inputsystem": {
       "version": "1.19.0",
       "depth": 1,
diff --git a/samples/desktop-avatar/Assets/TigerSpeechBubble.cs b/samples/desktop-avatar/Assets/TigerSpeechBubble.cs
index ca9a549..9ac7994 100644
--- a/samples/desktop-avatar/Assets/TigerSpeechBubble.cs
+++ b/samples/desktop-avatar/Assets/TigerSpeechBubble.cs
@@ -256,6 +256,7 @@ private void SetLayoutMode(bool on)
             PlayerPrefs.SetFloat(kBandPrefKey, bubbleBandFraction);
             PlayerPrefs.Save();
         }
+        MarkBubbleDirty();   // both branches rewrite the bubble's title/body text
         Debug.Log($"[TigerSpeechBubble] Layout mode {(on ? "ON — drag to set the 2D/3D split" : "OFF")} " +
                   $"(split={bubbleBandFraction:P0}; restart for crisp rendering at the new split)");
     }
@@ -299,9 +300,18 @@ void BuildUI()
         m_BubbleL2D = l2dGO.AddComponent<DisplayXRLocal2D>();
         m_BubbleL2D.resolution = new Vector2Int(1024, 640);
         m_BubbleL2D.useExplicitRect = true; // we supply the exact panel-px rect
+        // Cap the overlay refresh (displayxr-unity#244). The bubble is a static
+        // panel of text — nothing animates in it — so the enabled offscreen camera
+        // and the provider's full-RT bridge copy are pure per-frame waste. 4 Hz caps
+        // the worst case for a content change we failed to announce at 250 ms while
+        // dropping ~93% of those renders at 60 fps. Content changes go through
+        // MarkBubbleDirty(); the component itself force-refreshes when the pixel rect
+        // moves, which covers the split drag and window resizes.
+        m_BubbleL2D.maxRefreshHz = 4f;
         BuildBubble(l2dGO.transform);
         m_BubbleL2DGO = l2dGO;
         l2dGO.SetActive(true);
+        MarkBubbleDirty();
 
         Debug.Log($"[TigerSpeechBubble] BUILD v11 (simple-window): client={m_PanelW}x{m_PanelH}; " +
                   $"bubbleBand={bubbleBandFraction:P0} (top); press B to toggle window decoration.");
@@ -384,6 +394,15 @@ void ApplyLayout()
         }
     }
 
+    // The Local2D refresh is capped (see BuildUI), so every change to what the
+    // bubble canvas draws has to announce itself here — otherwise the new content
+    // sits invisible until the next permitted slot. The component consumes the flag
+    // in its LateUpdate, so a call from our Update lands on this same frame's render.
+    private void MarkBubbleDirty()
+    {
+        if (m_BubbleL2D != null) m_BubbleL2D.SetDirty();
+    }
+
     // ------------------------------------------------------------ canvas rect ---
 
     private void PushCanvasRect(int x, int y, int w, int h)
diff --git a/samples/desktop-avatar/Packages/manifest.json b/samples/desktop-avatar/Packages/manifest.json
index 1fa6981..b3fede7 100644
--- a/samples/desktop-avatar/Packages/manifest.json
+++ b/samples/desktop-avatar/Packages/manifest.json
@@ -1,6 +1,6 @@
 {
   "dependencies": {
-    "com.displayxr.unity": "https://github.com/DisplayXR/displayxr-unity.git#upm/v2.12.0",
+    "com.displayxr.unity": "https://github.com/DisplayXR/displayxr-unity.git#upm/v2.12.1",
     "com.unity.multiplayer.center": "1.0.1",
     "com.unity.render-pipelines.universal": "17.0.4",
     "com.unity.ugui": "2.0.0",
diff --git a/samples/desktop-avatar/Packages/packages-lock.json b/samples/desktop-avatar/Packages/packages-lock.json
index 1259508..7da3ac0 100644
--- a/samples/desktop-avatar/Packages/packages-lock.json
+++ b/samples/desktop-avatar/Packages/packages-lock.json
@@ -1,14 +1,5 @@
 {
   "dependencies": {
-    "com.displayxr.unity": {
-      "version": "https://github.com/DisplayXR/displayxr-unity.git#upm/v2.12.0",
-      "depth": 0,
-      "source": "git",
-      "dependencies": {
-        "com.unity.xr.management": "4.4.0"
-      },
-      "hash": "d1f0250527d6bc7da17c952a77dcdf4351ac02a5"
-    },
     "com.unity.burst": {
       "version": "1.8.28",
       "depth": 2,
diff --git a/samples/hdrp-singlepass-ui/Packages/manifest.json b/samples/hdrp-singlepass-ui/Packages/manifest.json
index 945eed2..bfa5724 100644
--- a/samples/hdrp-singlepass-ui/Packages/manifest.json
+++ b/samples/hdrp-singlepass-ui/Packages/manifest.json
@@ -1,6 +1,6 @@
 {
   "dependencies": {
-    "com.displayxr.unity": "https://github.com/DisplayXR/displayxr-unity.git#upm/v2.12.0",
+    "com.displayxr.unity": "https://github.com/DisplayXR/displayxr-unity.git#upm/v2.12.1",
     "com.unity.multiplayer.center": "1.0.1",
     "com.unity.render-pipelines.high-definition": "17.0.4",
     "com.unity.ugui": "2.0.0",
diff --git a/samples/hdrp-singlepass-ui/Packages/packages-lock.json b/samples/hdrp-singlepass-ui/Packages/packages-lock.json
index a32103f..218f0a6 100644
--- a/samples/hdrp-singlepass-ui/Packages/packages-lock.json
+++ b/samples/hdrp-singlepass-ui/Packages/packages-lock.json
@@ -1,14 +1,5 @@
 {
   "dependencies": {
-    "com.displayxr.unity": {
-      "version": "https://github.com/DisplayXR/displayxr-unity.git#upm/v2.12.0",
-      "depth": 0,
-      "source": "git",
-      "dependencies": {
-        "com.unity.xr.management": "4.4.0"
-      },
-      "hash": "d1f0250527d6bc7da17c952a77dcdf4351ac02a5"
-    },
     "com.unity.burst": {
       "version": "1.8.28",
       "depth": 2,
diff --git a/samples/urp-singlepass-ui/Packages/manifest.json b/samples/urp-singlepass-ui/Packages/manifest.json
index 1fa6981..b3fede7 100644
--- a/samples/urp-singlepass-ui/Packages/manifest.json
+++ b/samples/urp-singlepass-ui/Packages/manifest.json
@@ -1,6 +1,6 @@
 {
   "dependencies": {
-    "com.displayxr.unity": "https://github.com/DisplayXR/displayxr-unity.git#upm/v2.12.0",
+    "com.displayxr.unity": "https://github.com/DisplayXR/displayxr-unity.git#upm/v2.12.1",
     "com.unity.multiplayer.center": "1.0.1",
     "com.unity.render-pipelines.universal": "17.0.4",
     "com.unity.ugui": "2.0.0",
diff --git a/samples/urp-singlepass-ui/Packages/packages-lock.json b/samples/urp-singlepass-ui/Packages/packages-lock.json
index 1259508..7da3ac0 100644
--- a/samples/urp-singlepass-ui/Packages/packages-lock.json
+++ b/samples/urp-singlepass-ui/Packages/packages-lock.json
@@ -1,14 +1,5 @@
 {
   "dependencies": {
-    "com.displayxr.unity": {
-      "version": "https://github.com/DisplayXR/displayxr-unity.git#upm/v2.12.0",
-      "depth": 0,
-      "source": "git",
-      "dependencies": {
-        "com.unity.xr.management": "4.4.0"
-      },
-      "hash": "d1f0250527d6bc7da17c952a77dcdf4351ac02a5"
-    },
     "com.unity.burst": {
       "version": "1.8.28",
       "depth": 2,