Thanks for the answer.
Somethign that came to my mind after reading your answer.
The reason, why the power consumption is lower, is it because there is no CPU verification? 20-40W difference is big, and i doubt it, but does not hurt to ask

Other miners on cnv2 can also reduce power consumption footprint. Try worksize 16 and 32 you'll notice power consumption will reduce but so do the hashrate. TRM has achieved a balance there.
Right now whenever a card is hung the miner still goes on with other cards. This might be desirable in some cases but it would also be nice to have an option to crash the miner itself.