Access texture files?

[vile80r 0]

Is there a way to unpack the textures, edit them, then archive them back up?

 

My aim is to combat RDR2s large storage footprint by shrinking the file size of textures since I don't play the game over 1080p. I want to access the texture files, as in the individual texture images, then run a Photoshop macro to open them, shrink them by a percentage (for example 50%) save them then pack them back up into the original game archive file.

 

Is this possible