https://github.com/ZILtoid1991/iota/blob/main/source/iota/controls/polling.d#L865

I have done multiple changes, but the moment I get an event on a game controller, it'll lock up until a new event is made on the game controller. I cannot find any documentation on what to do exactly, only some vague gesturing about EV_SYN events, and that they should be handled in a certain way. And of course the usual recommendations of "but there are already libraries made to abstract OS-level stuff", except many of them often janky in more than one way (a lot of them still uses DirectInput).