My esp32 Board was doing Brownouts then i attached a lm317 3.3v power supply. It was now working with wifi without problem (serial was ok). Regulator was ok but resistance was bad. Attached a 470Uf Cap directly to esp8266 Reg. Solution: Check if the traces going to esp32 vcc gnd pins have resistance...

ESP32 would be everyones mcu if it adds: Long range LoRa or Another Network Lowest Sleep Current Consumption (While Interrupts Running) Small footprint without need of Crystals & Rf balun ( Even QFN ) All IOs accessable while wifi running ( IO's Saperate from Rf) These four things will change Esp32 ...