Creative Assembly has decided to implement a new launcher for the Total War series, the old launcher was BAD, we all know that, yet, CA managed to do worse... the new launcher is VERY BAD, because of this i have actually been forced to use Kaedrin's Mod Manager to get this collection to work, it's just another game launcher without all the bugs that CA implemented in the new one, so, here is the new installation procedure, i'm sorry for it but that's the only way i could get things to work (at least until CA decides to stop screwing things up) if you want to thank the poor bastard who made it (and you should) go HERE and buy him a beer.
A couple of things before we get started:
1- After install procedure is complete DO NOT run the game from steam, always use Kaedrin's launcher
2- to save time and make it easier, the directory paths i've put in the install procedure can be pasted in windows as they are

This is the shader preset i've made for this collection
Shader[drive.google.com]
Installation[drive.google.com]

As it cannot be installed through subscription i'll link it here:
Total War Warhammer II : Cinematic Battle Effects - Version 3.0

- Version 1.8.3 MUST be installed for the mods to work properly
- Unsubscribe from ALL mods for TW: WARHAMMER 2
- Go to:" C:\Program Files (x86)\Steam\steamapps\workshop\content" and delete folder "594570"
- Subscribe to all mods in the collection
- Once all mods are downloaded launch Warhammer II: set DirectX 11 in launch options and DISABLE ALL mods from the mod configuration panel
- Close Warhammer II launcher
- Download Kaedrin's Mod Manager[github.com]
- Extract the content in game directory where "Wharhammer2.exe" is located, default is: C:\Program Files (x86)\Steam\steamapps\common\Total War WARHAMMER II
- Create a shortcut for "Warhammer2MM.exe" wherever you prefer, from now on this is going to be our Warhammer launcher, forget launching the game from steam
- Open "Warhammer2MM.exe" and press ok when asked
- Close the Mod Manager
- Launch it again and wait for it to load all the mods
- Close the Mod Manager again
- Download "profile_Ultimate_Overhaul.txt"[drive.google.com]
- Put "profile_Ultimate_Overhaul.txt" in: C:\Users\%USERNAME%\AppData\Roaming\Kaedrin Mod Manager\Profiles\Warhammer2
- Open up the Mod Manager and select "Ultimate_Overhaul" in mod profiles
- Launch the game
- in game menu go to: Options > Graphics > Advanced
- set your unit detail settings on ultra *
- Set UI scale to 70% **
- PLAY ***
- Make sure you disable army caps for SFO when asked

* This is needed by reskins to work properly

** Because the Mod Configuration Tool isn't responding too well to different resolutions and scales, to prevent the UI from messing up the panel making impossible to set up your mod preferences, for EVERYTIME you want to start a new campaign you'll have to do this

*** Once you've started the campaign and you're done with the configuration panel, you can revert the UI scale to 100% ***