Strange warping effect with Cinemachine 2D virtual camera

Hi, I am experiencing the exact same problem mentioned in this post

https://gamedev.stackexchange.com/questions/157011/strange-warping-shimmering-effect-with-unity-tilemap-and-cinemachine/157021#157021

The Mario above in the gif is what my background sprite looks like when I move my player

The post mentioned using pixel pixel-perfect extension to fix it, but I have been using it, the problem still here.

The background sprites are 16*16 with a PPU of 16. No compression, Point
And below is my main camera + virtual camera setting: V2.9.7

Pretty much just default cinemachine setting, the problem occurs when I started using virtual camera while my player is moving.

Thanks for any tips and suggestion in advance

You need to have the PixelPerfect component on the main camera.