Overclocking
Overclocking is a bit of a pain on Radeons as there's no easy method of overclocking core and memory in one fell swoop. We configured Wattman into manual mode and then increased memory to the maximum 2,140MHz (17.12Gbps) and pushed the boost clock up to 108 per cent. The card would go higher on the core but scores dropped, suggesting what we found is a sweet spot.
Every little helps.