can do this if we're desperate for the last few %

selfdrive/car/card.py

@@ -80,10 +80,14 @@ def asdictref(obj) -> dict[str, Any]:
       for field in getattr(obj, _FIELDS):  # similar to dataclasses.fields()
         ret[field] = _asdictref_inner(getattr(obj, field))
       return ret
-    elif isinstance(obj, (tuple, list)):
-      return type(obj)(_asdictref_inner(v) for v in obj)
     else:
-      return obj
+      obj_type = type(obj)
+      if obj_type is list:
+        return [_asdictref_inner(v) for v in obj]
+      elif obj_type is tuple:
+        return tuple(_asdictref_inner(v) for v in obj)
+      else:
+        return obj
 
   return _asdictref_inner(obj)