Delay using the I2C communication with ROS

[Ronak2904]

I am using the Adafruit ServoKit library to send the signals to move my steering and motor conroller on the RC Autonomous Car. The Hardware used is PCA9685. I am generating the signal commands using MATLAB and sending it using ROS. Then the signals are passed from ROS to the hardware by using the adafruit library using python as the coding language. There is a build up of a delay every time I try to send the messages using the above described method.