Tried the zip above without higher MTU negotiation with the C3 board and it is much better for me
This is a really strange one. I was just about to write that MTU might be an issue - I wonder if it's possible that the ESP32 has some kind of static buffer for the MTU that's too small, and sometimes if it gets overwritten it can cause instability in the connection?
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
This is a really strange one. I was just about to write that MTU might be an issue - I wonder if it's possible that the ESP32 has some kind of static buffer for the MTU that's too small, and sometimes if it gets overwritten it can cause instability in the connection?