Claymore, what about Pitcairn bugs? With -dmem 1 too much incorrect shares. Without -dmem 1 speed less than 9.7. Power consumption in 10.2 is less - it's better than 9.7.
+1, the incorrect shares problem happens on both overclocked and non-overclocked cards. I too have to use 9.7 for my R9 270 cards. Waiting patiently for a fix.