By what metric? AFAIK the Factor 5 games, especially Rogue Squadron III, are considered the most challenging, both due to their obscure tricks (iirc Rogue Squadron uploads an outdated audio microcode to get a "loop counter" feature back which no other games use, for example) and most complete use of the MMU mechanisms (I believe they even use the ARAM as swap transparently to the game engine, using some goofy allocator trick) - which is why Rogue Squadron III was chosen for this benchmark.
Ok, never played that game. I’ll better try not to play that on my ancient Intel powered laptop ...
Different games run differently well on Dolphin if you got older hardware. While Mario Kart Double Dash runs perfectly fine in full screen, „F-Zero GX“ suffers massive slowdown in some levels on my 7 years old CPU/GPU combination. Interestingly, both games employ the „heated air“ effect on similarly looking levels — but still I got 40 FPS vs. 60 FPS in that case. I wouldn’t mind but the sound needs to be in sync with the graphics subsystem on the Game Cube — audio is broken with even slightly slower frame rates, unfortunately.
