I was using Dolphin 4.0-5363, for instance.
First, I´m glad to experience good speed ups in some of my games (including SMG, Mario Kart DD and SMK). It´s very impressive.
Now, on to the problem. I was using Dolphin with the Log window enabled while playing Super Mario Sunshine. For some reason, during cinematics there are huge drops every time the characters talk.
I saw the log window while there was a talk by the characters, and noticed that it would start to fill the window with red messages (like warnings or something). The red messages say: PerfQuery.cpp:39 E[Video]: Flushed query buffer early!
What do you think, does it have anything to do with what I´m experiencing? Sure, my machine isn´t powerful but I somehow manage to get the cinematics to go full speed before any talk happens.
One more thing, for some reason the audio starts after the video on this game (while using OpenAL with 6 ms latency, also happens with SMK. Other games doesn´t suffer this).
Rig 1: Windows 10 Home | AMD A6-1450 @ 600/1000/1400 MHz | AMD Radeon HD Graphics 8250 | 4GB RAM | HP Pavilion TouchSmart 11.
Rig 2: Windows 10 Pro | Intel Core i7-2640M @ 780/2800/3500 MHz | Intel HD 3000 Mobile | 8GB RAM | Dell Latitude 6320.