Slow deserialization for specific input

So I'm using this library with different input data. I have certain inputs of 700 lines with as many relations as below that take 50ms to deserialize (output file: 2800 lines). This input though, takes more than 1200ms! I tried so much, but nothing solves it. Removing all desk relations but 1, makes it take 220ms which is also pretty slow.

I really can't figure out what I'm doing wrong. Could anyone help me with this?

Expected Behavior

+/- 50ms

Actual Behavior

1200ms+

Steps to Reproduce the Problem

new jsonSerializer.Deserializer({keyForAttribute: 'camelCase'}).deserialize(data);

data:

{
  data: {
    type: 'tickets',
    id: 584297,
    attributes: {
      name: 'A18',
      created: '2021-11-23T14:02:16+00:00',
      ticket_called: '2021-11-23T15:08:21+00:00',
      ticket_set_to_waiting_list: null,
      ticket_called_from_waiting_list: null,
      ticket_finished: null,
      waiting_list: 0,
      service_id: 51,
      dispenser_id: 26,
      desk_id: 92,
      metadata: '{}',
      waiting_tickets_per_service: 1,
      total_waiting_tickets: 1,
      total_waiting_priority_tickets: 0,
      ticket_created: '2021-11-23T14:02:16+00:00'
    },
    relationships: {
      desks: {
        data: [
          { type: 'desks', id: 92 },
          { type: 'desks', id: 93 },
          { type: 'desks', id: 94 },
          { type: 'desks', id: 95 },
          { type: 'desks', id: 96 },
          { type: 'desks', id: 97 },
          { type: 'desks', id: 98 },
          { type: 'desks', id: 100 }
        ]
      }
    }
  },
  included: [
    {
      type: 'desks',
      id: 92,
      attributes: { name: 'Desk 1', setup_id: 24, open: 1 }
    },
    {
      type: 'desks',
      id: 93,
      attributes: { name: 'Desk 2', setup_id: 24, open: 0 }
    },
    {
      type: 'desks',
      id: 94,
      attributes: { name: 'Desk 3', setup_id: 24, open: 0 }
    },
    {
      type: 'desks',
      id: 95,
      attributes: { name: 'Desk 4', setup_id: 24, open: 0 }
    },
    {
      type: 'desks',
      id: 96,
      attributes: { name: 'Desk 5', setup_id: 24, open: 0 }
    },
    {
      type: 'desks',
      id: 97,
      attributes: { name: 'Desk 6', setup_id: 24, open: 0 }
    },
    {
      type: 'desks',
      id: 98,
      attributes: { name: 'Desk 7', setup_id: 24, open: 0 }
    },
    {
      type: 'desks',
      id: 100,
      attributes: { name: 'Desk 9', setup_id: 24, open: 0 }
    }
  ]
}

Specifications

Version: 3.6.4 (due to #223)

SeyZ / jsonapi-serializer