better graphic performance for 3d

scenes/3D/3d_cube.tscn

@@ -1,6 +1,4 @@
-[gd_scene load_steps=4 format=3 uid="uid://boxvq5qowh8nn"]
-
-[sub_resource type="Environment" id="Environment_t32a1"]
+[gd_scene load_steps=3 format=3 uid="uid://boxvq5qowh8nn"]
 
 [sub_resource type="BoxMesh" id="BoxMesh_5dg07"]
 
@@ -8,17 +6,21 @@
 resource_name = "spinning"
 script/source = "extends MeshInstance3D
 
-# Called every frame. 'delta' is the elapsed time since the previous frame.
 func _process(_delta):
 	rotate_y(0.01)
 	rotate_z(0.01)
 "
 
-[node name="Node3D" type="WorldEnvironment"]
-environment = SubResource("Environment_t32a1")
+[node name="3d_cube" type="Node3D"]
+
+[node name="visible_on_screen_enabler_3d" type="VisibleOnScreenEnabler3D" parent="."]
+enable_mode = 1
+enable_node_path = NodePath("../mesh_instance_3d")
 
 [node name="mesh_instance_3d" type="MeshInstance3D" parent="."]
+process_mode = 1
 transform = Transform3D(0.5, -0.5, 0.707107, 0.707107, 0.707107, 0, -0.5, 0.5, 0.707107, 0, 0, 0)
+cast_shadow = 0
 mesh = SubResource("BoxMesh_5dg07")
 script = SubResource("GDScript_a7mr5")
 
@@ -28,3 +30,5 @@ fov = 99.1704
 
 [node name="directional_light_3d" type="DirectionalLight3D" parent="."]
 transform = Transform3D(1, 0, 0, 0, 0.856547, 0.51607, 0, -0.51607, 0.856547, 0, 0, 5.56892)
+directional_shadow_mode = 0
+sky_mode = 1