https://www.polygon.com/2018/8/8/17664294/dead-cells-nintendo-switch-frame-rate

Dead Cells is an amazing game, but the Switch version struggles to maintain a smooth frame rate. Motion Twin, the game’s developer, didn’t think it was that big of a deal during its own internal testing, and the idea of delaying the Switch release to optimize performance seemed worse than launching it in the current state, it said on Reddit.

The fans have made enough of a fuss about it, however, that priorities have changed.