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Question by y4510471 · Jan 11, 2018 at 04:07 PM · arduinolaggyserialportlags

Using serial makes game very laggy

I've been trying to use a bluetooth module and an accelerometer connected to an Arduino Board to use as a controller in Unity. The serial baud rate is set to 9600. It sends me x and y coordinates that I store in a float array. The data is successfully sent and received. My problem is that whenever I press play, the game is VERY slow. The game is hardly playable, everything is just so slowed down. If I desactivate the script using the serial, the game is back to its normal speed. Any idea of how I could fix this ? My code is very simple (see below).

 public class Moving: MonoBehaviour
 {
     SerialPort serial = new SerialPort("COM7", 9600);
     public float[] data = new float [2];
     
 void Start()
     {
 
     }
 
     void Update()
     {
         if (!serial.IsOpen)
             serial.Open();
         Move();
     }
 
     void Move()
     {
         data[0] = float.Parse(serial.ReadLine());
         data[0] = data[0] / 10;
         data[1] = float.Parse(serial.ReadLine());
         data[1] = data[1] / 10;
         transform.position = new Vector3(data[0], data[1], 0);
     }
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