

Download Here
Also be sure to check out
AkvenJan's ESRGAN Upscale Pack

This is a texture upscale pack that will upscale the texture size by 4 times. Thanks to AkvenJan for spending all this time and effort to make Nolf better.
It consists of 6 parts:
HD-COMMON1-X4.REZ
HD-COMMON2-X4.REZ
HD_TEX1-X4.REZ
HD_TEX2-X4.REZ
HD_TEX3-X4.REZ
HD_TEX4-X4.REZ
If you think 4 times is a bit much, then there is a 2x version as well
To avoid issues with custom maps in multiplayer, I would recommend only loading the COMMON 1 & 2 rez files. Reason for this is that the custom map .dat files aren't updated to work with the upscaled textures. However, the whole single player game is.
So in singleplayer, load them all

Download Here or Here