Weird Coloured Liquid Rendering Issue

[kylepannan]

Whenever I try and render this bottle with a pink liquid in it the render turns out awful with squares of colour in some spaces and no colour in others. I have tried changing the absorption distance and it does not produce any different results, nor does rendering it on my machine or the cloud renderer. 

[TrippyLighting]

That looks like a Z-fighting issue.

The liquid volume must overlap with the bottle volume.

Then you need to use the dielectric priority setting to give the bottle "volume" a higher priority.

[kylepannan]

How do I do that?

I am relatively new to fusion

[TrippyLighting]

You can start with sharing your model (export as .f3d and attach to next post) . I can then demonstrate.