Hi earth-video,
Set up the Material tag to Projection> Cubic. Check with a render if that is what you need to have it.
Then select all the polygons that have that texture on them.
Go to Object Manager> Tags> Assign UVW Coordinates.
This places the UVs the same as the Cubic Projection.
The Material Tag is now automatically set to UVW. Leave it that way.
Screenshot 2025-11-25 at 10.58.41 AM.jpg
An alternative is given with the Triplanar Node when you select: Reference. That takes care of it.
Screenshot 2025-11-25 at 10.56.35 AM.jpg
Please let me know if that works for you. (I do not have this GSG texture. If you go with the Triplanar Node, you need for any texture a new Triplanar, based on your picture, four in total, then.
Use the RS Renderview to evaluate the results.
Cheers