Learn how to efficiently shrink your Unreal Engine project by resizing textures on disk using ActionUtility scripts and Image Manipulation tools.https://dev.epicgames.com/community/learning/tutorials/mPML/unreal-engine-resize-unreal-textures-size-on-disk-using-actionutility-scripts
I just saw this tutorial, and it is really helpful. I have done something similar but in the new version of Unreal Engine (5.4, 5.5), you can resize the textures on the disk just by using the context menu “Texture Source Reduce Size”
