How to get an equivalent of the ‘Continuously Raster’ function on the precomposed layers ?

Hello to all.

I have a recurrent problem using vector layers, precomps and cameras.
I want to precise before that :

• 100% of my work in AE provides from vector/illustrator layers
• I check ‘Continuously Raster’ for each layer, but not for precomps
• The camera I create are one node cameras, with depth of field inactivated
• The problem is the same if, instead of using a camera, I create and use a scale property on a general precomp that which includes all of my layers (so it is not a problem of camera, but a general a global understanding that escapes me !).

So the problem is that I get blur on all my layers that are in precomp if I use a zoom effect on my scene.
The precomposed layers are not clear as thez should be, as the others layers (not precomposed) are for instance.

It seems to be normal : there is no ‘Continuously Raster’ on these layers - as it works différently for these precomposed layers.

So my question is : how to get an equivalent of the ‘Continuously Raster’ on the precomposed layers ?

I join a graphics to be more explicite :

Thank you for your help !