I am so tired of developers doing this kind of thing.
Double-tapping the stick is severely awkward and works maybe 2/3 times?
You could have just made one of the L/R triggers be run. Oh, they're probably already being used for something... oh, they don't do anything at all and are completely free to map to?
Which I could do myself in Steam, but OH, you chose the one function (double tapping the stick) that is impossible to map in Steam.
It is so incredibly frustrating to see developers make an otherwise beautiful and fun game, and then absolutely fumble it with one irritating decision (that can't be changed) for no reason.