Would you be able to explain further what you mean by "shimmering," @Soham697? I've taken a look at your video, and it's a little hard to tell what you mean as the camera keeps moving, which also causes the grass to move as well. This is making it a little tricky to see what you mean. I can see the lighting/shading of the grass changing as you move the camera, but I'm unsure if this is the "shimmering" you're referring to.
Does this "shimmering" effect only happen when you move the camera, or does it happen when the camera is stationary? If so, can you please send us a video which demonstrates the effect without moving the camera? This will be helpful for us to identify the "shimmering" effect you're experiencing in-game.
Additionally, you mention that this issue happens with the beard as well. Could you send us a video which demonstrates the "shimmering" effect with the beard too? This will be useful for further investigation.
Thanks!