From what I know there is no fix or workaround yet. The main thread for that issue is this one: Pixelated and grainy clouds are back starting with 1.14.5.0, you can check it out and contribute there.
From what I know there is no fix or workaround yet. The main thread for that issue is this one: Pixelated and grainy clouds are back starting with 1.14.5.0, you can check it out and contribute there.