The GPU downclocks itself due to the uncommon things Dolphin does with the graphics APIs. It doesn't really actively use the GPU like most games do – it often uses API calls that flush the GPU pipeline or stall the GPU, in addition to completely disregarding the GPU for long periods of time (e.g. a few microseconds) while doing VideoCommon stuff on the CPU, which allows it to fall asleep. Disabling the power management entirely just forces the GPU to run at max clockspeed the whole time, thus removing the latency of waking it up. (Forgive any inaccuracies in my explanation, I'm not neobrain/degasus.)
<@skid_au> fishing resort is still broken: http://i.imgur.com/dvPiQKg.png
<@neobrain> dafuq
<+JMC47> no dude, you're just holding the postcard upside down
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<@Lioncash> pauldachz in charge of shitposting :^)
<@neobrain> dafuq
<+JMC47> no dude, you're just holding the postcard upside down
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<@Lioncash> pauldachz in charge of shitposting :^)