Using Render Textures for a skybox material

I’ve been working on a system that runs effects on a grid of pixels that is transferred to the skybox through a camera rendering to a texture before being applied to a 6-sided skybox. An example of the 6 walls running is shown below:
skybox example

The core issue I find is that the skybox operates when testing in Unity but not after being uploaded to VRC. I was curious how vrc handles render textures being used by Unity. Perhaps I need to place these textures in a location where vrc can keep track of them?

Here’s a look at the texture files along with the skybox.