I remember there being a performance "mod" for BOTW on gamebanana. It would modify the rpx executable of the game making it reach 30FPS more consistently. If i find it again i will post it here.
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Just found it, its called Wii U Console Performance Patch, I'll try it
It does boost the performance, but only on the gamepad, on the TV it lags a lot more
Can someone tell me which bnp file or zip file to download for the 30fps?