Unity freezes for for some time on pressing play. Profiler shows Awake is delaying

I have a heavy load once I press play. It takes as you see 103 seconds for it to start. It seems it has many calls within the Awake on in the Outline class. Outline is a free asset from asset store called "Quick Outline"

This is how the Awake method looks like in the Outline class:

 void Awake()
 {
     // Cache renderers
     renderers = GetComponentsInChildren<Renderer>();
 
     // Instantiate outline materials
     outlineMaskMaterial = Instantiate(Resources.Load<Material>(@"Materials/OutlineMask"));
     outlineFillMaterial = Instantiate(Resources.Load<Material>(@"Materials/OutlineFill"));
 
     outlineMaskMaterial.name = "OutlineMask (Instance)";
     outlineFillMaterial.name = "OutlineFill (Instance)";
 
     // Retrieve or generate smooth normals
     LoadSmoothNormals();
 
     // Apply material properties immediately
     needsUpdate = true;
 }

   void LoadSmoothNormals()
     {
         // Retrieve or generate smooth normals
         foreach (var meshFilter in GetComponentsInChildren<MeshFilter>())
         {
             // Skip if smooth normals have already been adopted
             if (!registeredMeshes.Add(meshFilter.sharedMesh))
             {
                 continue;
             }
 
             // Retrieve or generate smooth normals
             var index = bakeKeys.IndexOf(meshFilter.sharedMesh);
             var smoothNormals = (index >= 0) ? bakeValues[index].data : SmoothNormals(meshFilter.sharedMesh);
 
             // Store smooth normals in UV3
             meshFilter.sharedMesh.SetUVs(3, smoothNormals);
         }
 
         // Clear UV3 on skinned mesh renderers
         foreach (var skinnedMeshRenderer in GetComponentsInChildren<SkinnedMeshRenderer>())
         {
             if (registeredMeshes.Add(skinnedMeshRenderer.sharedMesh))
             {
                 skinnedMeshRenderer.sharedMesh.uv4 = new Vector2[skinnedMeshRenderer.sharedMesh.vertexCount];
             }
         }
     }

I do have a lot of MeshesRenderer:s, is that what is taking so long time on load up? If this Component is created at a later stage the delay is not there. Only when this component is created initially.