I'm not sure what you are referring to with "PA", maybe Auto-pilot ?
In any case:
- GSX hotkey, by default, it's NOT Ctrl+F11, but it's CTRL+Shift+F12 or CTRL+F12 so, if you really have it on CTRL+F11, it means you changed it. Of course, if you change the hotkey, you must be sure it's not used by something else.
- If you mean F12 and wrote F11 by mistake, that doesn't change the fact that, whenever you have any addons using hotkeys, you must be sure they don't have keyboard conflicts. You are supposed to change the hotkey in either addon, provided that addon allows you to do that in the first place.
Of course, GSX being the flexible program that it is, allows you to change its default hotkey, using the "Key Mappings" option from the Couatl settings menu.