i want to export some textures from a game to edit them but,

i want to export roughly 3 textures from a ue4 game made with ue 4.12
i usually use umodel to export textures but the thing is that, these textures have “cooked sizes” and the texture gets exported with an smaller resolution then its imported resolution

thing is i know why its like that, and i know how it works, so ive been wondering if theres any ue4 related tools that allows me to export these textures with its import resolution instead of the cooked resolution?
really would like an answer since ive been trying to find a way of doing this for weeks…