To everyone who struggles, this works 100%, trust me, even if this comment is old. You just need to download these files, no matter the game you want to play:
https://www.nexusmods.com/madmax/mods/56?tab=files&file_id=240
It is named perhaps for another game, than you want to play, but files are the same.
1. Download the files from the link
2. Extract it to empty folder
3. Delete .dds files in folder "modded_textures" (if there are not any files, its okay, leave it)
4. All files and both folders including original_textures and (empty) modded_textures move to folder where executable of YOUR game is -> your game directory
5. Download textures that YOU want to use in YOUR game, and move all .dds files into folder "modded_textures"
6. Launch the game and enjoy.
This worked for me instantly, for Assassin's creed Odyssey 1.5.3, after hours of dealing with terrible Resorep bullshit.
Resorep just dont work, it may work for some, but it is pretty broken. This method right here works just fine.