To answer my own question:

After the audio output is stopped, the DMA buffer will still send output to the codec on repeat, unless the channel is disabled (or using auto clear). The trouble with using i2s_channel_disable(this->_txHandle) is that upon enabling the channel again, it will briefly repeat the previous sample ...

Some servers require SNI and if ```config.skip_cert_common_name_check = true;``` is set, this can also lead to the -0x7780 error.

In the documentation: https://docs.espressif.com/projects/esp-techpedia/en/latest/esp-friends/advanced-development/debugging/backtrace-coredump.html

"For RISC-V, the focus is on MEPC and MTVAL, as well as stack information (Backtrace address is not printed by default)."

In the config: [ ] Generate ...