This is my first post in Blender. I'm currently working on this sugarcane's project, But The rendering result cause a lot of noise or flicking issues. can any one give me a advise? I got turn on Denoising and 120 Samples. much appreciated if you guys could give me a hand. thanks

Below is the test rendering link. please have a look. https://youtu.be/j08kpjA4r4A