System Information:
Operating system: Windows 10
Graphics card: RTX 2080Ti
CPU: Intel i9 9900K
Broken version: 2.82a
Short description of error:
Grass flikering in Eevee engine, as you can see in this video example: https://youtu.be/NT1xwBta_yc
Exact steps for others to reproduce the error:
Open the grass file, and render the animation, then play the animation and you will see that grass is flickering.
The only workaround I found at this point is by using a different software to remove the noise:
Example DE:Noise for Premiere https://revisionfx.com/products/denoise/
The result after apply DE:Noise plugin: https://youtu.be/yRTKW3kwgZ0
Hope Blender can handle this in future, or maybe is a bug.