diff --git a/src/hooks/three/useOctreeGraphNode.ts b/src/hooks/three/useOctreeGraphNode.ts
index 741eb05..baf2ca0 100644
--- a/src/hooks/three/useOctreeGraphNode.ts
+++ b/src/hooks/three/useOctreeGraphNode.ts
@@ -3,6 +3,7 @@ import type { RefObject } from "react";
 import type { Object3D } from "three";
 import { Octree } from "three/addons/math/Octree.js";
 import type { OctreeReadyHandler } from "@/types/three/three";
+import { logger } from "@/utils/core/Logger";
 
 export function useOctreeGraphNode(
   graphNodeRef: RefObject<Object3D | null>,
@@ -17,16 +18,25 @@ export function useOctreeGraphNode(
   }, [rebuildKey]);
 
   useEffect(() => {
+    logger.debug("useOctreeGraphNode", "Check", {
+      enabled,
+      octreeBuilt: octreeBuilt.current,
+      hasGraphNode: !!graphNodeRef.current,
+      rebuildKey,
+    });
+
     if (!enabled) return;
 
     const graphNode = graphNodeRef.current;
     if (!enabled || octreeBuilt.current || !graphNode) return;
     octreeBuilt.current = true;
 
+    logger.info("useOctreeGraphNode", "Building octree from graph node");
     graphNode.updateMatrixWorld(true);
 
     const octree = new Octree();
     octree.fromGraphNode(graphNode);
+    logger.info("useOctreeGraphNode", "Octree built, calling onOctreeReady");
     onOctreeReady(octree);
   }, [enabled, graphNodeRef, onOctreeReady, rebuildKey]);
 }
diff --git a/src/hooks/world/useWorldSceneLoading.ts b/src/hooks/world/useWorldSceneLoading.ts
index 24020af..4810f14 100644
--- a/src/hooks/world/useWorldSceneLoading.ts
+++ b/src/hooks/world/useWorldSceneLoading.ts
@@ -2,6 +2,7 @@ import { useCallback, useEffect, useState } from "react";
 import type { Octree } from "three/addons/math/Octree.js";
 import type { SceneMode } from "@/types/debug/debug";
 import type { SceneLoadingChangeHandler } from "@/types/world/sceneLoading";
+import { logger } from "@/utils/core/Logger";
 
 interface UseWorldSceneLoadingOptions {
   onLoadingStateChange?: SceneLoadingChangeHandler | undefined;
@@ -31,10 +32,12 @@ export function useWorldSceneLoading({
     (sceneMode === "physics" && octree !== null);
 
   const handleGameMapLoaded = useCallback(() => {
+    logger.info("WorldSceneLoading", "GameMap loaded");
     setGameMapLoaded(true);
   }, []);
 
   const handleGameStageLoaded = useCallback(() => {
+    logger.info("WorldSceneLoading", "GameStage loaded");
     setGameStageLoaded(true);
     onLoadingStateChange?.({
       currentStep: "Initialisation gameplay",
@@ -45,6 +48,7 @@ export function useWorldSceneLoading({
 
   const handleOctreeReady = useCallback(
     (nextOctree: Octree) => {
+      logger.info("WorldSceneLoading", "Octree ready");
       setOctree(nextOctree);
       onLoadingStateChange?.({
         currentStep: "Collision prête",
diff --git a/src/world/GameMapCollision.tsx b/src/world/GameMapCollision.tsx
index 2f5d16b..4939cfc 100644
--- a/src/world/GameMapCollision.tsx
+++ b/src/world/GameMapCollision.tsx
@@ -14,6 +14,7 @@ import { useOctreeGraphNode } from "@/hooks/three/useOctreeGraphNode";
 import type { MapNode } from "@/types/editor/editor";
 import type { OctreeReadyHandler } from "@/types/three/three";
 import type { SceneLoadingChangeHandler } from "@/types/world/sceneLoading";
+import { logger } from "@/utils/core/Logger";
 import { logModelLoadError } from "@/utils/three/modelLoadLogger";
 
 export interface GameMapCollisionNode {
@@ -108,6 +109,14 @@ export function GameMapCollision({
   const collisionReady =
     mapReady && settledCollisionNodeCount >= collisionNodes.length;
 
+  logger.debug("GameMapCollision", "State", {
+    mapReady,
+    collisionNodesCount: collisionNodes.length,
+    settledCollisionNodeCount,
+    collisionReady,
+    buildOctree,
+  });
+
   const notifyLoaded = useCallback(() => {
     if (loadedNotifiedRef.current) return;
 
@@ -124,6 +133,7 @@ export function GameMapCollision({
 
   const handleOctreeReady = useCallback<OctreeReadyHandler>(
     (octree) => {
+      logger.info("GameMapCollision", "Octree built, calling onOctreeReady");
       onLoadingStateChange?.({
         currentStep: "Collision prête",
         progress: 0.92,