I suggest you try flash again with blissz firmware. Then return all voltage to normal default. I think it is 13 also the fan to high
or whatever the default is.
Then reboot and reflash with original firmware.
There is really no high temp protection currently even in the original firmware but at least fans there are
auto.
This protection is critical for me and as far as i know it will be in the next release.
Maybe on Christmas gift ?