Thats not a fix. Its just hiding the problem. Surely, the game could benefit from a bit lower resolution to get better FPS overall, but as the article you've linked says, the resolution change doesn't explain the difference in perfomance the game shows docked vs portable. There are a couple more things to take into account, hardware-wise. I'm pretty sure the game could benefit of some optimizations based on the CPU architecture It's running on (if I recall correctly WiiU is POWER7 by IBM and Switch is ARM-based, both versions run on different hardware, so optimizing things at the same time for both systems is mostly impossible and probably CPU-specific optimizations could make the game get those extra FPS it needs, If done correctly.