Fixed shader lag issue

Fighter.gd

@@ -18,7 +18,6 @@ var stamina:int = 100
 @export
 var descriptor:String = "Foo"
 
-var _material = null
 var _material_counter = 0
 
 var _actions = []
@@ -42,8 +41,7 @@ func is_animation_done() -> bool:
 
 # Called when the node enters the scene tree for the first time.
 func _ready():
-	_material = _animation_sprite.material;
-	_animation_sprite.material = null
+	_animation_sprite.material.set_shader_parameter("aura_width", 0)
 	_animation_sprite.flip_h = orientation
 	_animation_player.play("RESET")
 
@@ -79,7 +77,7 @@ func _on_next_round():
 
 	_material_counter -= 1
 	if _material_counter == 0:
-		_animation_sprite.material = null
+		_animation_sprite.material.set_shader_parameter("aura_width", 0)
 
 func _schedule_next_action():
 	if _animation_player.is_playing():
@@ -108,7 +106,7 @@ func _on_animation_finished(anim_name):
 	
 	if (anim_name == "PowerUp"):
 		_animation_sprite.frame = 0
-		_animation_sprite.material = _material
+		_animation_sprite.material.set_shader_parameter("aura_width", 1)
 		_material_counter = 3
 
 func _on_animation_started(anim_name):

Fighter.tscn

@@ -6,8 +6,9 @@
 [ext_resource type="PackedScene" uid="uid://blhw157wwm02k" path="res://DamageLabel.tscn" id="3_nllc3"]
 
 [sub_resource type="ShaderMaterial" id="ShaderMaterial_r07wr"]
+resource_local_to_scene = true
 shader = ExtResource("2_tgww4")
-shader_parameter/aura_width = 1.0
+shader_parameter/aura_width = 0.0
 shader_parameter/aura_color = Color(0.631373, 1, 0.827451, 1)
 
 [sub_resource type="Animation" id="Animation_uyuin"]
@@ -138,6 +139,21 @@ tracks/0/keys = {
 "values": [34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50]
 }
 
+[sub_resource type="Animation" id="Animation_u40bv"]
+resource_name = "PowerUp"
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("Sprite2D:frame")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9),
+"transitions": PackedFloat32Array(1, 1, 1, 1, 1, 1, 1, 1, 1, 1),
+"update": 1,
+"values": [127, 128, 129, 130, 127, 128, 129, 130, 127, 128]
+}
+
 [sub_resource type="Animation" id="Animation_hs612"]
 length = 0.001
 tracks/0/type = "value"
@@ -200,21 +216,6 @@ tracks/0/keys = {
 "values": [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24]
 }
 
-[sub_resource type="Animation" id="Animation_u40bv"]
-resource_name = "PowerUp"
-tracks/0/type = "value"
-tracks/0/imported = false
-tracks/0/enabled = true
-tracks/0/path = NodePath("Sprite2D:frame")
-tracks/0/interp = 1
-tracks/0/loop_wrap = true
-tracks/0/keys = {
-"times": PackedFloat32Array(0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9),
-"transitions": PackedFloat32Array(1, 1, 1, 1, 1, 1, 1, 1, 1, 1),
-"update": 1,
-"values": [127, 128, 129, 130, 127, 128, 129, 130, 127, 128]
-}
-
 [sub_resource type="AnimationLibrary" id="AnimationLibrary_jbrqc"]
 _data = {
 "Attack1.1": SubResource("Animation_uyuin"),