Around 5 MB/s are leaked with a controller connected, when the controller is sending events both on the Editor and the Player.

Steps to reproduce:
1) Open the attached project or create a new one.
2) Connect any controller to the computer.
3) Connect 'Instruments' to the Editor or Player.
4) Start clicking the controller to send events to the Editor.

Memory usage of IOHIDValue starts building up and is never released.