diff --git a/scripts/webcam_display.gd b/scripts/webcam_display.gd
index 58d4190..1b254a1 100644
--- a/scripts/webcam_display.gd
+++ b/scripts/webcam_display.gd
@@ -18,9 +18,12 @@ var _has_received_frame: bool = false
 
 
 func _ready() -> void:
-	# Get or create the material
+	# Get or create the material — duplicate to ensure each instance has its own
 	_material = material_override as StandardMaterial3D
-	if _material == null:
+	if _material != null:
+		_material = _material.duplicate() as StandardMaterial3D
+		material_override = _material
+	else:
 		_material = StandardMaterial3D.new()
 		material_override = _material