diff --git a/app/src/lib/result-viewer/Debug.svelte b/app/src/lib/result-viewer/Debug.svelte
new file mode 100644
index 0000000..2de0ffa
--- /dev/null
+++ b/app/src/lib/result-viewer/Debug.svelte
@@ -0,0 +1,19 @@
+<script lang="ts">
+  import { T } from '@threlte/core';
+  import type { Group } from 'three';
+  import { updateDebugScene } from './debug';
+
+  type Props = {
+    debugData?: Record<number, { type: string; data: Int32Array }>;
+  };
+
+  let group = $state<Group>(null!);
+  const { debugData }: Props = $props();
+
+  $effect(() => {
+    if (!group || !debugData) return;
+    updateDebugScene(group, $state.snapshot(debugData));
+  });
+</script>
+
+<T.Group bind:ref={group} />
diff --git a/app/src/lib/result-viewer/Scene.svelte b/app/src/lib/result-viewer/Scene.svelte
index cf3736b..e68af5a 100644
--- a/app/src/lib/result-viewer/Scene.svelte
+++ b/app/src/lib/result-viewer/Scene.svelte
@@ -1,33 +1,26 @@
 <script lang="ts">
   import { colors } from '$lib/graph-interface/graph/colors.svelte';
   import { T, useTask, useThrelte } from '@threlte/core';
-  import { Grid, MeshLineGeometry, MeshLineMaterial, Text } from '@threlte/extras';
-  import {
-    Box3,
-    type BufferGeometry,
-    type Group,
-    Mesh,
-    MeshBasicMaterial,
-    Vector3,
-    type Vector3Tuple
-  } from 'three';
+  import { Grid } from '@threlte/extras';
+  import { Box3, type BufferGeometry, type Group, Mesh, MeshBasicMaterial, Vector3 } from 'three';
   import { appSettings } from '../settings/app-settings.svelte';
   import Camera from './Camera.svelte';
+  import Debug from './Debug.svelte';
 
   const { renderStage, invalidate: _invalidate } = useThrelte();
 
   type Props = {
     fps: number[];
-    lines: Vector3[][];
+    debugData?: Record<number, { type: string; data: Int32Array }>;
     scene: Group;
     centerCamera: boolean;
   };
 
   let {
-    lines,
     centerCamera,
     fps = $bindable(),
-    scene = $bindable()
+    scene = $bindable(),
+    debugData
   }: Props = $props();
 
   let geometries = $state.raw<BufferGeometry[]>([]);
@@ -91,18 +84,12 @@
     });
     _invalidate();
   });
-
-  function getPosition(geo: BufferGeometry, i: number) {
-    return [
-      geo.attributes.position.array[i],
-      geo.attributes.position.array[i + 1],
-      geo.attributes.position.array[i + 2]
-    ] as Vector3Tuple;
-  }
 </script>
 
 <Camera {center} {centerCamera} />
 
+<Debug {debugData} />
+
 {#if appSettings.value.showGrid}
   <Grid
     cellColor={colors['outline']}
@@ -116,35 +103,4 @@
     fadeOrigin={new Vector3(0, 0, 0)}
   />
 {/if}
-
-<T.Group>
-  {#if geometries}
-    {#each geometries as geo (geo.id)}
-      {#if appSettings.value.debug.showIndices}
-        {#each geo.attributes.position.array, i (i)}
-          {#if i % 3 === 0}
-            <Text fontSize={0.25} position={getPosition(geo, i)} />
-          {/if}
-        {/each}
-      {/if}
-
-      {#if appSettings.value.debug.showVertices}
-        <T.Points visible={true}>
-          <T is={geo} />
-          <T.PointsMaterial size={0.25} />
-        </T.Points>
-      {/if}
-    {/each}
-  {/if}
-
-  <T.Group bind:ref={scene}></T.Group>
-</T.Group>
-
-{#if appSettings.value.debug.showStemLines && lines}
-  {#each lines as line (line[0].x + '-' + line[0].y + '-' + '' + line[0].z)}
-    <T.Mesh>
-      <MeshLineGeometry points={line} />
-      <MeshLineMaterial width={0.1} color="red" depthTest={false} />
-    </T.Mesh>
-  {/each}
-{/if}
+<T.Group bind:ref={scene}></T.Group>
diff --git a/app/src/lib/result-viewer/Viewer.svelte b/app/src/lib/result-viewer/Viewer.svelte
index 7162bb0..c7a370d 100644
--- a/app/src/lib/result-viewer/Viewer.svelte
+++ b/app/src/lib/result-viewer/Viewer.svelte
@@ -1,10 +1,10 @@
 <script lang="ts">
   import SmallPerformanceViewer from '$lib/performance/SmallPerformanceViewer.svelte';
   import { appSettings } from '$lib/settings/app-settings.svelte';
-  import { decodeFloat, splitNestedArray } from '@nodarium/utils';
+  import { splitNestedArray } from '@nodarium/utils';
   import type { PerformanceStore } from '@nodarium/utils';
   import { Canvas } from '@threlte/core';
-  import { DoubleSide, Vector3 } from 'three';
+  import { DoubleSide } from 'three';
   import { type Group, MeshMatcapMaterial, TextureLoader } from 'three';
   import { createGeometryPool, createInstancedGeometryPool } from './geometryPool';
   import Scene from './Scene.svelte';
@@ -23,6 +23,7 @@
 
   let geometryPool: ReturnType<typeof createGeometryPool>;
   let instancePool: ReturnType<typeof createInstancedGeometryPool>;
+
   export function updateGeometries(inputs: Int32Array[], group: Group) {
     geometryPool = geometryPool || createGeometryPool(group, material);
     instancePool = instancePool || createInstancedGeometryPool(group, material);
@@ -40,44 +41,16 @@
     scene: Group;
     centerCamera: boolean;
     perf: PerformanceStore;
+    debugData?: Record<number, { type: string; data: Int32Array }>;
   };
 
-  let { scene = $bindable(), centerCamera, perf }: Props = $props();
-
-  let lines = $state<Vector3[][]>([]);
-
-  function createLineGeometryFromEncodedData(encodedData: Int32Array) {
-    const positions: Vector3[] = [];
-
-    const amount = (encodedData.length - 1) / 4;
-
-    for (let i = 0; i < amount; i++) {
-      const x = decodeFloat(encodedData[2 + i * 4 + 0]);
-      const y = decodeFloat(encodedData[2 + i * 4 + 1]);
-      const z = decodeFloat(encodedData[2 + i * 4 + 2]);
-      positions.push(new Vector3(x, y, z));
-    }
-
-    return positions;
-  }
+  let { scene = $bindable(), centerCamera, debugData, perf }: Props = $props();
 
   export const update = function update(result: Int32Array) {
     perf.addPoint('split-result');
     const inputs = splitNestedArray(result);
     perf.endPoint();
 
-    if (appSettings.value.debug.showStemLines) {
-      perf.addPoint('create-lines');
-      lines = inputs
-        .map((input) => {
-          if (input[0] === 0) {
-            return createLineGeometryFromEncodedData(input);
-          }
-        })
-        .filter(Boolean) as Vector3[][];
-      perf.endPoint();
-    }
-
     perf.addPoint('update-geometries');
 
     const { totalVertices, totalFaces } = updateGeometries(inputs, scene);
@@ -97,8 +70,8 @@
   <Canvas>
     <Scene
       bind:this={sceneComponent}
-      {lines}
       {centerCamera}
+      {debugData}
       bind:scene
       bind:fps
     />
diff --git a/app/src/lib/result-viewer/debug.ts b/app/src/lib/result-viewer/debug.ts
new file mode 100644
index 0000000..ea40319
--- /dev/null
+++ b/app/src/lib/result-viewer/debug.ts
@@ -0,0 +1,90 @@
+import { splitNestedArray } from '@nodarium/utils';
+import {
+  BufferGeometry,
+  type Group,
+  InstancedMesh,
+  Line,
+  LineBasicMaterial,
+  Matrix4,
+  MeshBasicMaterial,
+  SphereGeometry,
+  Vector3
+} from 'three';
+
+function writePath(scene: Group, data: Int32Array): Vector3[] {
+  const positions: Vector3[] = [];
+  const f32 = new Float32Array(data.buffer);
+
+  for (let i = 2; i + 2 < f32.length; i += 4) {
+    const vec = new Vector3(f32[i], f32[i + 1], f32[i + 2]);
+    positions.push(vec);
+  }
+
+  // Path line
+  if (positions.length >= 2) {
+    const geometry = new BufferGeometry().setFromPoints(positions);
+    const line = new Line(
+      geometry,
+      new LineBasicMaterial({ color: 0xff0000, depthTest: false })
+    );
+    scene.add(line);
+  }
+
+  // Instanced spheres at points
+  if (positions.length > 0) {
+    const sphereGeometry = new SphereGeometry(0.05, 8, 8); // keep low-poly
+    const sphereMaterial = new MeshBasicMaterial({
+      color: 0xff0000,
+      depthTest: false
+    });
+
+    const spheres = new InstancedMesh(
+      sphereGeometry,
+      sphereMaterial,
+      positions.length
+    );
+
+    const matrix = new Matrix4();
+    for (let i = 0; i < positions.length; i++) {
+      matrix.makeTranslation(
+        positions[i].x,
+        positions[i].y,
+        positions[i].z
+      );
+      spheres.setMatrixAt(i, matrix);
+    }
+
+    spheres.instanceMatrix.needsUpdate = true;
+    scene.add(spheres);
+  }
+
+  return positions;
+}
+
+function clearGroup(group: Group) {
+  for (let i = group.children.length - 1; i >= 0; i--) {
+    const child = group.children[i];
+    group.remove(child);
+    // optional but correct: free GPU memory
+    // @ts-expect-error three.js runtime fields
+    child.geometry?.dispose?.();
+    // @ts-expect-error three.js runtime fields
+    child.material?.dispose?.();
+  }
+}
+
+export function updateDebugScene(
+  group: Group,
+  data: Record<number, { type: string; data: Int32Array }>
+) {
+  clearGroup(group);
+  return Object.entries(data || {}).map(([, d]) => {
+    switch (d.type) {
+      case 'path':
+        splitNestedArray(d.data)
+          .forEach(p => writePath(group, p));
+    }
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars
+    return (_g: Group) => {};
+  }).flat();
+}
diff --git a/app/src/lib/runtime/runtime-executor.ts b/app/src/lib/runtime/runtime-executor.ts
index 8974257..81584dd 100644
--- a/app/src/lib/runtime/runtime-executor.ts
+++ b/app/src/lib/runtime/runtime-executor.ts
@@ -59,7 +59,7 @@ export class MemoryRuntimeExecutor implements RuntimeExecutor {
   private definitionMap: Map<string, NodeDefinition> = new Map();
 
   private seed = Math.floor(Math.random() * 100000000);
-  private debugData: Record<string, Int32Array> = {};
+  private debugData: Record<number, { type: string; data: Int32Array }> = {};
 
   perf?: PerformanceStore;
 
@@ -143,8 +143,8 @@ export class MemoryRuntimeExecutor implements RuntimeExecutor {
     for (const node of graphNodes) {
       if (node.type.endsWith('/debug')) {
         node.state = node.state || {};
-        node.state.depth = Math.min(...node.state.parents.map(s => s.state.depth), 1) - 1;
-        nodes.push(node);
+        const parent = node.state.parents[0];
+        parent.state.debugNode = true;
       }
     }
 
@@ -247,6 +247,12 @@ export class MemoryRuntimeExecutor implements RuntimeExecutor {
           log.log(`Using cached value for ${node_type.id || node.id}`);
           this.perf?.addPoint('cache-hit', 1);
           results[node.id] = cachedValue as Int32Array;
+          if (node.state.debugNode && node_type.outputs) {
+            this.debugData[node.id] = {
+              type: node_type.outputs[0],
+              data: cachedValue
+            };
+          }
           continue;
         }
         this.perf?.addPoint('cache-hit', 0);
@@ -255,8 +261,11 @@ export class MemoryRuntimeExecutor implements RuntimeExecutor {
         log.log(`Inputs:`, inputs);
         a = performance.now();
         results[node.id] = node_type.execute(encoded_inputs);
-        if (node_type.id.endsWith('/debug')) {
-          this.debugData[node.id] = results[node.id];
+        if (node.state.debugNode && node_type.outputs) {
+          this.debugData[node.id] = {
+            type: node_type.outputs[0],
+            data: results[node.id]
+          };
         }
         log.log('Executed', node.type, node.id);
         b = performance.now();
diff --git a/app/src/lib/runtime/types.ts b/app/src/lib/runtime/types.ts
index 8786862..1b91e7c 100644
--- a/app/src/lib/runtime/types.ts
+++ b/app/src/lib/runtime/types.ts
@@ -5,6 +5,7 @@ type RuntimeState = {
   parents: RuntimeNode[];
   children: RuntimeNode[];
   inputNodes: Record<string, RuntimeNode>;
+  debugNode?: boolean;
 };
 
 export type RuntimeNode = SerializedNode & { state: RuntimeState };
diff --git a/app/src/lib/runtime/worker-runtime-executor.ts b/app/src/lib/runtime/worker-runtime-executor.ts
index 2b9a56b..6aba5b1 100644
--- a/app/src/lib/runtime/worker-runtime-executor.ts
+++ b/app/src/lib/runtime/worker-runtime-executor.ts
@@ -6,12 +6,15 @@ export class WorkerRuntimeExecutor implements RuntimeExecutor {
     new URL(`./worker-runtime-executor-backend.ts`, import.meta.url)
   );
 
-  async execute(graph: Graph, settings: Record<string, unknown>) {
+  execute(graph: Graph, settings: Record<string, unknown>) {
     return this.worker.executeGraph(graph, settings);
   }
-  async getPerformanceData() {
+  getPerformanceData() {
     return this.worker.getPerformanceData();
   }
+  getDebugData() {
+    return this.worker.getDebugData();
+  }
   set useRuntimeCache(useCache: boolean) {
     this.worker.setUseRuntimeCache(useCache);
   }
diff --git a/app/src/lib/settings/app-settings.svelte.ts b/app/src/lib/settings/app-settings.svelte.ts
index d3da7ea..d9ff323 100644
--- a/app/src/lib/settings/app-settings.svelte.ts
+++ b/app/src/lib/settings/app-settings.svelte.ts
@@ -59,26 +59,11 @@ export const AppSettingTypes = {
       label: 'Execute in WebWorker',
       value: true
     },
-    showIndices: {
-      type: 'boolean',
-      label: 'Show Indices',
-      value: false
-    },
     advancedMode: {
       type: 'boolean',
       label: 'Advanced Mode',
       value: false
     },
-    showVertices: {
-      type: 'boolean',
-      label: 'Show Vertices',
-      value: false
-    },
-    showStemLines: {
-      type: 'boolean',
-      label: 'Show Stem Lines',
-      value: false
-    },
     cache: {
       title: 'Cache',
       useRuntimeCache: {
diff --git a/app/src/lib/sidebar/panels/ActiveNodeSelected.svelte b/app/src/lib/sidebar/panels/ActiveNodeSelected.svelte
index ac53556..2993c6e 100644
--- a/app/src/lib/sidebar/panels/ActiveNodeSelected.svelte
+++ b/app/src/lib/sidebar/panels/ActiveNodeSelected.svelte
@@ -42,11 +42,13 @@
     const store: Store = {};
     Object.keys(inputs).forEach((key) => {
       if (props) {
-        const value = props[key] || inputs[key].value;
+        const value = props[key] !== undefined ? props[key] : inputs[key].value;
         if (Array.isArray(value) || typeof value === 'number') {
           store[key] = value;
+        } else if (typeof value === 'boolean') {
+          store[key] = value ? 1 : 0;
         } else {
-          console.error('Wrong error');
+          console.error('Wrong error', { value });
         }
       }
     });
diff --git a/app/src/routes/+page.svelte b/app/src/routes/+page.svelte
index 33a4e53..515dd8e 100644
--- a/app/src/routes/+page.svelte
+++ b/app/src/routes/+page.svelte
@@ -68,6 +68,7 @@
   let sidebarOpen = $state(false);
   let graphInterface = $state<ReturnType<typeof GraphInterface>>(null!);
   let viewerComponent = $state<ReturnType<typeof Viewer>>();
+  let debugData = $state<Record<number, { type: string; data: Int32Array }>>();
   const manager = $derived(graphInterface?.manager);
 
   async function randomGenerate() {
@@ -107,6 +108,7 @@
 
       if (appSettings.value.debug.useWorker) {
         let perfData = await runtime.getPerformanceData();
+        debugData = await runtime.getDebugData();
         let lastRun = perfData?.at(-1);
         if (lastRun?.total) {
           lastRun.runtime = lastRun.total;
@@ -165,6 +167,7 @@
         bind:scene
         bind:this={viewerComponent}
         perf={performanceStore}
+        debugData={debugData}
         centerCamera={appSettings.value.centerCamera}
       />
     </Grid.Cell>
diff --git a/packages/utils/src/flatTree.test.ts b/packages/utils/src/flatTree.test.ts
index 845accc..3ca0724 100644
--- a/packages/utils/src/flatTree.test.ts
+++ b/packages/utils/src/flatTree.test.ts
@@ -1,5 +1,10 @@
 import { expect, test } from 'vitest';
-import { concatEncodedArrays, decodeNestedArray, encodeNestedArray } from './flatTree';
+import {
+  concatEncodedArrays,
+  decodeNestedArray,
+  encodeNestedArray,
+  splitNestedArray
+} from './flatTree';
 
 test('it correctly concats nested arrays', () => {
   const input_a = encodeNestedArray([1, 2, 3]);
@@ -82,3 +87,80 @@ test('it correctly handles arrays with mixed data types', () => {
   const decoded = decodeNestedArray(encodeNestedArray(input));
   expect(decoded).toEqual(input);
 });
+
+// Test splitNestedArray function
+test('it splits nested array into segments based on structure', () => {
+  const input = [[1, 2], [3, 4]];
+  const encoded = new Int32Array(encodeNestedArray(input));
+  const split = splitNestedArray(encoded);
+
+  // Based on the actual behavior, splitNestedArray returns segments
+  // but the specific behavior needs to match the implementation
+  expect(Array.isArray(split)).toBe(true);
+  expect(split.length).toBe(2);
+  expect(split[0][0]).toBe(1);
+  expect(split[0][1]).toBe(2);
+  expect(split[1][0]).toBe(3);
+  expect(split[1][1]).toBe(4);
+});
+
+// Test splitNestedArray function
+test('it splits nested array into segments based on structure 2', () => {
+  // dprint-ignore
+  const encoded = new Int32Array([
+    0, 1,
+      0, 19,
+        0, 1,
+        0,          0,           0,          1060487823,
+        1067592955, 1079491492, -1086248132, 1056069822,
+       -1078247113, 1086620820,  1073133800, 1047681214,
+       -1068353940, 1094067306,  1078792112, 0,
+      1, 1,
+      0, 19,
+        0, 1,
+        0,          0,           0,          1060487823,
+       -1089446963, 1080524584,  1041006274, 1056069822,
+       -1092176382, 1087031528, -1088851934, 1047681214,
+        1081482392, 1094426140, -1107842261, 0,
+      1, 1,
+    1, 1
+  ]);
+
+  // Should be split into two seperate arrays
+  const split = splitNestedArray(encoded);
+
+  // Based on the actual behavior, splitNestedArray returns segments
+  // but the specific behavior needs to match the implementation
+  expect(Array.isArray(split)).toBe(true);
+  expect(split.length).toBe(2);
+  expect(split[0][0]).toBe(0);
+  expect(split[0][1]).toBe(1);
+  expect(split[1][0]).toBe(0);
+  expect(split[1][1]).toBe(1);
+});
+
+// Test splitNestedArray function
+test('it splits nested array into segments based on structure 2', () => {
+  // dprint-ignore
+  const encoded = new Int32Array( [
+    0, 1,
+      0, 27,
+        0, 1,
+        0, 0,          0, 1065353216,
+        0, 1067757391, 0, 1061997773,
+        0, 1076145999, 0, 1058642330,
+        0, 1081542391, 0, 1053609164,
+        0, 1084534607, 0, 1045220556,
+        0, 1087232803, 0, 0,
+      1, 1,
+    1, 1
+  ]);
+
+  // Should be split into two seperate arrays
+  const split = splitNestedArray(encoded);
+
+  // Based on the actual behavior, splitNestedArray returns segments
+  // but the specific behavior needs to match the implementation
+  expect(Array.isArray(split)).toBe(true);
+  expect(split.length).toBe(1);
+});