With the integration of OpenCL into the Vulkan it makes me revisit the old question of how additionl dissimilar GPU's can help your Crossfire rig in Star Citizen. For AMD users this is a big move; AMD TrueAudio Next is tied to your GPU's and hence something that will feature into OpenCL's load balancing. AMD A-Series APU's will probably have their iGPU"s woke up once these features are integrated into Star Citizen for a free performance boost. If this all comes to play, what are the chances that discreet low level GCN cards (such as the R7 255, R7 360 / R7 450 Cape Verde) might be a worthwhile boost for your PCIE 4x (16x physical) slot to give you some additional acceleration?