diff --git a/src/rust/lqosd/src/node_manager/js_build/src/graphs/queuing_activity_waveform.js b/src/rust/lqosd/src/node_manager/js_build/src/graphs/queuing_activity_waveform.js
index 6f9a103a..b8e18221 100644
--- a/src/rust/lqosd/src/node_manager/js_build/src/graphs/queuing_activity_waveform.js
+++ b/src/rust/lqosd/src/node_manager/js_build/src/graphs/queuing_activity_waveform.js
@@ -180,10 +180,11 @@ function ceilingSeriesData(samples, direction, windowStart, windowEnd) {
         const ceilingBps = toNumber(ceilingData[i][1], 0);
         const throughputBps = toNumber(throughputData[i][1], 0);
         const atCeiling = ceilingBps > 0 && throughputBps >= (ceilingBps * 0.95);
+        const activeTimestamp = i > 0 ? timestamp : windowStart;
 
         if (base.length === 0) {
             base.push([timestamp, ceilingBps]);
-            active.push([timestamp, atCeiling ? ceilingBps : null]);
+            active.push([activeTimestamp, atCeiling ? ceilingBps : null]);
         }
 
         base.push([nextTimestamp, ceilingBps]);
@@ -375,7 +376,7 @@ export class QueuingActivityWaveform extends DashboardGraph {
                     yAxisIndex: 0,
                     showSymbol: false,
                     smooth: false,
-                    step: "end",
+                    step: "start",
                     lineStyle: {
                         width: 2.4,
                         color: this.colors.throughputLine,
@@ -435,7 +436,7 @@ export class QueuingActivityWaveform extends DashboardGraph {
                     showSymbol: false,
                     connectNulls: false,
                     smooth: false,
-                    step: "end",
+                    step: "start",
                     lineStyle: {
                         width: 2.1,
                         color: this.colors.qooLine,
diff --git a/src/rust/lqosd/src/node_manager/static2/node_manager.css b/src/rust/lqosd/src/node_manager/static2/node_manager.css
index dcbc93df..19f58160 100644
--- a/src/rust/lqosd/src/node_manager/static2/node_manager.css
+++ b/src/rust/lqosd/src/node_manager/static2/node_manager.css
@@ -521,6 +521,7 @@ html[data-bs-theme="light"] .sidebar .navbar-toggler-icon {
         0 0 0 1px color-mix(in srgb, var(--lqos-border) 30%, transparent);
 }
 .lqos-circuit-activity-chart {
+    position: relative;
     height: 338px;
     width: 100%;
     border: 1px solid color-mix(in srgb, var(--lqos-border) 82%, transparent);
@@ -533,6 +534,18 @@ html[data-bs-theme="light"] .sidebar .navbar-toggler-icon {
         inset 0 -24px 60px rgba(5, 10, 18, 0.42);
     overflow: hidden;
 }
+.lqos-circuit-activity-chart::after {
+    content: "";
+    position: absolute;
+    top: 0;
+    right: 0;
+    width: 4px;
+    height: 100%;
+    pointer-events: none;
+    background:
+        radial-gradient(circle at 0 0, rgba(35, 74, 95, 0.18) 0%, rgba(12, 20, 31, 0) 42%),
+        linear-gradient(180deg, #111b28 0%, #0b1420 100%);
+}
 [data-bs-theme="light"] .lqos-circuit-activity-panel {
     background: linear-gradient(
         180deg,
@@ -576,6 +589,11 @@ html[data-bs-theme="light"] .sidebar .navbar-toggler-icon {
         inset 0 1px 0 rgba(255, 255, 255, 0.65),
         inset 0 -18px 34px rgba(177, 193, 214, 0.12);
 }
+[data-bs-theme="light"] .lqos-circuit-activity-chart::after {
+    background:
+        radial-gradient(circle at 0 0, rgba(108, 160, 184, 0.12) 0%, rgba(255, 255, 255, 0) 42%),
+        linear-gradient(180deg, #f8fbff 0%, #edf3f9 100%);
+}
 .lqos-circuit-activity-kpi {
     height: 100%;
     border: 1px solid color-mix(in srgb, var(--lqos-border) 80%, transparent);