Maximum ECG sampling speed ?

[jcaude]

Hello,
In the firmware I saw that the ECG sampling frequency is initialized to 125 SPS .. this is very low (the lowest the SoC is capable of), even too low for applications that requires precise estimations of the ECG signal (medical devices are usually sampling between 500Hz - 1 KHz and the SoC is capable of 8KHz). Is it possible to increase this value ? and eventually broadcast the signal on wifi or usb (the ESP32 serial port, even at the highest speed could not handle more than 2KHz with the packet definition of the firmware 2.x).