Ok guys I finally fix my game.

I tried a old fix who works for Origins : https://steamcommunity.com/app/582160/discussions/0/1483235412214825118/

But for audio (Assassin's Creed Valhalla\sounddata\PC) AND video files (Assassin's Creed Valhalla/video).

So I copied my .pck and video .webm on (where windows is installed). And then with https://schinagl.priv.at/nt/hardlinkshellext/linkshellextension.html : (https://schinagl.priv.at/nt/hardlinkshellext/linkshellextension.html)I created symbolic link for each files and junction for repertory.
It took me only 6GB on my drive (delete non-wanted languages for audio and video) I kept french and English.

I hope it will help you and fix your game.

ps : this is my Valhalla's repertory video :

If you have this bug after the update, Ubisoft add somes sound files, don't forget to move them to your new repertory and make news symbolics links.

@s-t-r-l-k-e-r Symbolic link is for files, junction is for repertory. If you make junction you didn't need to make symbolic link for files inside. I use both of them because it was more simple for me.

@acdcwrocker Thanks for the guide bro. I was too tired to make better what I did.

I hope it will help people.

I find a solution for me here : https://discussions.ubisoft.com/topic/77106/loading-screen-and-nothing-happens/21?lang=en-US

Search my message

Ok guys I finally fix my game.

I tried a old fix who works for Origins : https://steamcommunity.com/app/582160/discussions/0/1483235412214825118/

But for audio (Assassin's Creed Valhalla\sounddata\PC) AND video files (Assassin's Creed Valhalla/video).

So I copied my .pck and video .webm on (where windows is installed). And then with https://schinagl.priv.at/nt/hardlinkshellext/linkshellextension.html : (https://schinagl.priv.at/nt/hardlinkshellext/linkshellextension.html)I created symbolic link for each files and junction for repertory.
It took me only 6GB on my drive (delete non-wanted languages for audio and video) I kept french and English.

I hope it will help you and fix your game.

ps : this is my Valhalla's repertory video :

@sonic1o1

Didn't work for me. I tried to install it on same of differente SSD and nothing work.