intel graphics - How to specify the GPU to be benchmarked by Unigine Superposition? - Ask Ubuntu

I am trying to benchmark an Intel HD Graphics 520 (integrated) and a AMD Radeon R5 M330 (dedicated), but I am not able to specify for Unigine Superposition which GPU to use. Here is the result window

Anyone know why my gpus are not at 100% usage and have these dips

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