GTA V: Please go to the “Mouse/Gamepad Settings” page in the vorpX ingame menu and set the “Xbox 360 Gamepad Override” to “Full”. The default “Partial” is supposed to be correct for the game, but apparently there is some issue with current vorpX version that causes your problem with that.
BF4 (and other Frostbite games): Another issue with the current vorpX release, sorry. No immediate solution, but it will be looked into with high priority next week. A hotfix will be made available as soon as it is solved.