BLE Connection parameters choice for multiple connection

[MrHause]

Hi

I am looking for an advise about selection of the optimal connection parameters. I am using couple of nrf52832 devices as the nus peripherial. As the central device I use esp32 that acts as gateway. It collects data from NRF peripherial devices. I don't know how to select connection parameters for multiple connection. The maximum payload is 20bytes. The nrf devices collects data and raport it to the ESP32 gateway. There might be a lot of data available. The number of data to send is unpredictable and asynchronous. So the question is how to select connection parameters for this multiple connection? Have you got any expiernce with such problem or have you got some good information source? Is it better to use the shortest connection interval and what consequences brings it for multiple connection.

Thank you in advise for your support.