using 480LowEnergyOK.rom with 16.9.1 and CDM 7.0 mining at ethpool.org, running approx 2 days now - very stable holding 29MHs per GPU.
This 16.9.1 seems to be the life saver....
Your cards (I think you have Sapphires) held it well even with previous drivers. I'm trying to understand what causes the drop in hashrate of my XFX.
This is why I asked
akaloith about stability of hashing