Even though you found it, I'll quickly answer, so if anyone does a search, the thread will be somewhat relevant.

Open IS Boxer Toolkit.
On the top pane, expand Character Sets and click on the one you wish to change.
On the left pane, click the 1 under Slots.
On the right pane, pick a hotkey to switch to this character.
Repeat the process for the other numbers under Slots.

You can also change the default behavior on PiP swaps here.
Or change the CPU cores used.
Adjust your FTL modifiers.
Or limit your FPS.