Mr. Shifty suffers from some framerate hiccups on the Switch, as a number of people have reported. Obviously, this has caused people to hit up the development team on Twitter. The thing is, the dev team is responding in a rather odd way. The following info was put together by Reddit user, Hepatitisc.
For those wondering, Mr. Shifty was ported to Switch by by a 2-man team in Seattle working on behalf of their publisher. Team Shifty themselves don't have a dev kit for Switch, but the people handling the port do. In a Reddit AMA, here's what Team Shifty had to say about performance issues.
The Switch version has some trouble at times, more towards the end of the game. We're always working on performance improvements and will update it when we can. The performance improvements should benefit every version.
Certainly a confusing approach to the situation, but hopefully the developers come through soon and get things working better.