My rig is this :
WIndows 10 Pro 64 - bit ( version 21H2 ), Intel(R) Core(TM) i9-9900 CPU @ 3.10GHz  3.10 GHz , RAM - 32000GB , Nvidia 1080 Aero 8 GB Ram
I followed every step in the troubleshoting and still i have lag .

Hello .
After the game starts and showed the AMD logo - the game srats to lag massivly. Can't even press a button to chech the game for addons .I heard the sound that i pressed a button to continue to next step . After 10 min or more - the game SLOWLY continue to the next step - the menu. After 10 more min of waiting the game accept my responce to chose the options menu . In there i set all the graphics to low, even the screen resulution to 1280 -720. And after 5 min of waiting to responce - the game accept the changes . But after that - the lag pressist. I didin't try to play the game - if i have lagg in the menu - i think the lagg will be in the game too .
I updated my GPU , WIndows 10( even on fresh install ) , put the game on SSD.
Where is the problem - some options or my rig is the problem ?

• Have you been able to complete our basic PC troubleshooting guide? These steps help to tackle a number of common causes behind crashes / freezes, and provide us with a basis for further investigation. Answer : I did all in troubleshooting guide and it's still stuck at the AC logo splash screen ( before the warning massage )
• What are your system specs (CPU/GPU)? Answer :  i9-9900 CPU @ 3.10GHz  3.10 GHz / Nvidia GeForce GTX 1080 Aero 8 GB Windows 10 Pro
• Have you been able to play the game without experiencing crashes / freezes before? Answer : Yes - i had no problems after several patches or adding new events of the game .
• When did these crashes / freezes first occur? Please be as exact as possible. Answer : The first time i experienced the freeze is before 3 days , when i wanted to continue playing the game after several months not played it .
• Have you made any recent changes to your system, such as updating your Operating System or installing new software? Answer : Yes. I did several changes to my OS - changed the hard disk with the SSD , put more RAM in my PC - from 8 to 32.
• Are there any specific triggers for these crashes / freezes? For instance, do they happen when launching the game, or during a loading screen? Answer - At first after installing the game via Ubisoft launcher - the game verify the files and showing me the AC logo and stayed that way like 2 - 3 mins. After that the games launches and showing me the warning massage . And after 1 or 2 min staying that way - the game completely crashes and showing me to send the crash report or not to do nothing .

I played the game last year and i had no problems playing it . But for some reasons - i stopped playing the game. For that time , that i was not playing , i upgraded my PC.
Yesterday , i wanted to continue my progress and after installing it to my PC - it wont start . The game is showing me the logo of AC Valhalla , but it is freezed on this position for 1 - 2 min and after this - it shows me to send the crash report or do nothing .
I preinstall the game 3 times, check the files of the game - 5 times and still nothing. Even i upgrade the drives with the newest one - and still not working .
My PC Configurations are -  Intel(R) Core(TM) i9-9900 CPU @ 3.10GHz  3.10 GHz with 32 GB Ram.