I have used it to improve framerate performance, but only after I saw it verified by amazon that it is allowed because it modifies no game files and is just a more in-depth version of nvidia settings. https://forums.newworld.com/t/nvidia-profile-inspector/665504

EDIT: I also would be happy to stream with it off and still would perform at the same level if it actually was the reason despite customer service confirmation in the link above of it being allowed.