Why Matlab freezes when connecting with arduino with WIFI turned ON

[CONNECTION WITH USB]

When I turn ofF the WIFI of my laptop, the arduino is easily connected via Matlab

When I turn on the WIFI of my laptop, a=arduino('COM3') command freezes and I have to force shut MATLAB

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I intend to connect the arduino board with Matlab using s bluetooth module but matlab freezes when wifi/bluetooth is turned on

Any help ...