Low data rate

I have successfully connected my BLE device (ESP32 board + IMU) to my windows pc using 
PyGATT library and I can receive data from the IMU.. However, I receive the data with a sampling frequency <25 Hz. Using the same code on my ESP32 board I can receive data on my phone with a rate of 180 Hz.

Why does this happen? Do I have to modify the library?

Thank you