Foliage Noisy when moving camera on FXAA

Hello, I’ve run into a problem where when I change the AA method to FXAA the foliage starts becoming incredibly noisy when i move the camera around. Its incredibly distracting for the player. If anyone could point me in the right direction or tell me a fix it would be greatly appreciated. Sorry for low quality video, its the first time I’ve tried to do something like this.