It was 60FPS on GameCube.
It seems the visual upgrades in Paper Mario: The Thousand-Year Door for Nintendo Switch may come at a cost. An early tech analysis by Nintendo World Report seemingly reveals the new version of this turn-based RPG classic will target 30FPS.
This analysis is based on the Nintendo Direct video upload and it apparently isn't "an issue with the trailer simply being rendered at 30FPS". It may come as a surprise to fans of the original GameCube classic, as the 2004 version ran at 60FPS. In saying this, the newest entry Paper Mario: The Origami King was also capped at 30FPS.
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