Until the C31 phaseout starts around Jan 15, C31 will certainly be more profitable.
It depends on your hardware when C32 becomes more profitable, but likely not until April...
Well I would guess a little earlier - lets assume a Vega64 does 1.3 g/s C31 and 0.4 g/s C32. So 30.7% of the speed. Considering the higher scale of C32 the profitability is right now 63% of C31. So at current speeds it will take until end of March until the profitability flips. But C32 is barely optimized yet
Ps: currently on travel, sry for the silence. Also still waiting for reply from AMD about the Windows issue :/