Thanks for your comment.
The current spike seems to be synchronized with the voltage spike. I connected a 1000uF capacitor to the 3V3 terminal. The voltage spike waveform has become more gradual but is still present. It seems that the power supply has to be separated.

Hello everyone. I'm having trouble with voltage spikes appearing on the 3V3 and 5V terminals of my ESP32-DevKitC-32E. It is observed when using Bluetooth communication (a2dp_sink). Does anyone know how to dampen the voltage spike on the DevKitC's 3V3 terminal? Figure1.jpg This is an observation of t...