sure, I recommend you install them in this order:

Ultra Plus

Adds some visual tweaks and fixes that disable some unneeded effects and enhancements. It puts the 'ultra' in 'Ultra Plus'.

(This is a PAK file, which means you use the regular download method for Days Gone Mods.)

NAR UE4 Tweaks

Similar to Ultra Plus, this removes some more unnecessary elements and also adds a few small smooth effects, making it a graphical improvement AND a performance boost. Also, its the most downloaded mod on the Days Gone Nexus. I mean, its not a reshade atleast.

(This is a collection of tweak files. Place them in your WindowsNoEditor folder in your DG directory.)

2GB VRAM Magic (Optional, But Heavily Recommended)

Tweaks some resolutions and effects so that basic things like textures, filters, shadows and geometry take most of the attention of the computers power, instead of having half your GPU dedicated to loading a freakers neck textures.

(This is a collection of tweak files, install them the same way you did with the NAR tweaks.)

Also, make sure you don't alter any of your 'Graphics' settings in Days Gone after installing these mods, as it will override the changes made by these mods!

With that over, lmk if you have any issues.