Above 70C is not that bad but not that good either.
I guess 60-70C is the good temps, the lower the temps the better it is.
Anyway, add -cvddc 900 in claymore bat file and don't do MSI undervolting. You'll see better results.
I applied -cvddc 900 flag in my bat file but whenever I do that, the gpu remains idel and i got 0.000 MH/s....
what am I doing wrong?