WoW - FXAA with NVIDIA

Hey,

I’ve got a MSI GS65 with a NVIDIA GTX 1070.
In the NVIDIA Control Panel while tweaking the settings for WoW I realized that the Antialiasing - FXAA setting is greyed out. It “says not supported for this application.”
The video settings of WoW allow me to choose between FXAA low and high.
Still, I’m not sure if the game is able to use it, and if not how can make it happen?

Thanks in advance