Sure thing.
The game runs just fine at 804MHz with one very specific exception, this screen here, the Race Event Select:
If you press the A button from here with the New 3DS clock speed enabled, the game crashes. So once you get to here, you need to open the
Rosalina menu with L+D-Pad Down+Select, go into
New 3DS menu..., and
Set clock rate to 268MHz. Back out of the Rosalina menu until you're back in the game, and
now press A to select the event.
The game will load up this screen, the Race Select:
And you've just bypassed the crash. Hit L+D-Pad Down+Select again, back into
New 3DS menu... and now
Set clock rate to 804MHz. Back out of Rosalina again (don't hit B too many times or you'll quit back to the Race Event Select screen in-game and have to do this all over again) and continue playing as normal. You can leave the clock speed at 804MHz until this event is done and you're ready to start a new one.
Rinse and repeat.
You have to do this every time you start an Event, so ... at least 50 times over the course of the entire game, and that's assuming you never replay any events. It's definitely a hassle, don't get me wrong, and you'll definitely screw up and forget to do it a bunch of times, crashing the game. But the framerate is so much smoother, it's like playing a different game. I was surprised this game didn't review better until I played a few races at 268MHz and realized the slowdown is absolutely ridiculous. To me, the effort is worth it for the payoff of a much better game.
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Veho:
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FAST6191:
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Psionic Roshambo:
