UE4 - Xbox Controller not working in-game, why?

Hi, have an Xbox360 controller, and sometimes my project works just fine with it (viewport and in-game) BUT sometimes my controller works in the editor windows, and once I click play in PIE it doesn’t work In-game, which is strange because why it does work within the editor windows?

This problem does not happen all the time, reconecing the controller or restarting UE4 doesn’t fix the issue once it happens, my only option is to restart my PC, and then the controller works in-game, most of the time.

Why? It worries me because I want to also be able to release to Xbox and I’m not sure if there are going to be issues.