❔ [RabbitMQ][RabbitMq.Client] Low consuming rate.

.AddSingleton<IAsyncConnectionFactory, ConnectionFactory>(x =>
    {
        return new ConnectionFactory
        {
            DispatchConsumersAsync = true,
            ConsumerDispatchConcurrency = 10,
            // UseBackgroundThreadsForIO = true,
            UserName = config.Username,
            Password = config.Password,
            HostName = config.Host,
            Port = config.Port,
            Ssl = config.SSL
                ? new SslOption(config.Host, enabled: true)
                : new SslOption()
        };
    })

    public class A : AsyncDefaultBasicConsumer
    {
        public A(IModel model) : base(model)
        {
        }

        public override Task HandleBasicDeliver(string consumerTag, ulong deliveryTag, bool redelivered, string exchange, string routingKey,
            IBasicProperties properties, ReadOnlyMemory<byte> body)
        {
            return Task.CompletedTask;
        }
    }

using var connection = _connectionFactory.CreateConnection();
var channel = connection.CreateModel();
var consumer = new A(channel);
channel.BasicConsume(consumer, queueInfo.Name, autoAck: false, exclusive: true);