ESP-c3 Running hot when LEDs off

Hardware
1

I have built a custom unit with two ESP32-C3 super-mini, one for wLED with two LED lines of 12v LED, and the other running ESP-easy with weather and current sensors in one box.

https://www.aliexpress.com/item/1005006461886182.html

I notice the wLED ESP32 gets much hotter that other even when LEDs are off.
I tested the ESP32-c out of the box on USB lead, with not other hardware. it still got hot.
i got a second unit and same download code or latest source code compiled with new v0.16 still get hot. I have a DS18B20 TO-92 chip glued on each C3 CPU, the wLED C3 will go to 54-62deg, yet ESP-easy C3 only goes to 40-43 deg when the lid is closed.

I am still very new to VS platformIO, so asking for help, is it possible to change CPU clock to slower 80Mz to test if it runs cooler ?

2

Some guys think even 65 is normal for c3 supermini ( well normal for that board which is not good to start with and I think has a HW quality issues ) .

For CPU clock you can change board_build.f_cpu in platformio.ini .

You can also test with TX power and Disable WiFi sleep but those two may impact connectivity so use with care but since you are using C3 then you must like some experimentation to start with .

For more confusing result try in other firmwares as with other boards we tested some only gets hot with wled so might be its too heavy for that poor board