Optimization, the Tegra chipset is from 2015 but has modern bells and whistles in regards to development pipelines and API they if you know what you're doing, you're in familiar territory with a lower resource overhead.
Though it surprises me that Squeenix optimized it to 60FPS instead of the 30, I didn't expect that, even folks like Panic Button usually just Opt for 30 with an aggressive dynamic resolution solution, but essentially, they're forced to get creative in an environment where they already know what to do.
Though, I honestly can't believe it, did Squeenix really bother to optimize the switch port that much? Dragon Quest Builders one and two just run at 30FPS on switch.