no, i'm not but maybe it's battery problem? if you've installed another ROM and still same issue appares, i think it's not System problem, maybe it's phisycal problem like battery... you have to check for this, pay attantion maybe it happens only on when battery is on same percentage. e.g. i had Samsung and it was happening when phone was at 30-35% of battery, it was rebooting or turning off by itself