Seeeduino LoRaWAN Bad RSSI

Hi SeeedStudio,

I am testing my newly purchased Seeeduino LoraWAN.

Followed tutorial (p2p_rx and p2p_tx) on Seeeduino LoRaWAN Wiki Page, got very bad RSSI like -110 even the 2 devices are less than 10 cm apart. Here is a video:


How do I reproduce the similar RSSI (-19 and -20) in your Seeduino LoraWan Wiki page? How do I fix this?