Cannot get Huntsmanv2 analog controller to work in halo pc..

I am just wondering if anyone else has gotten it to work.. The game doesnt support mouse+keyboard/joystick controller to run at the same time simultaneously. at least from what I have been able to figure out. It work's but it won't let you use mouse and keyboard at the same time. you can use the asdw joystick controls. OR the mouse. and theres a delay in between. lol. specifically with halo for pc. thanks!