Hi fg2001,
Yes... there is definitely a slow down of the primary SSD drives. It is not noticeable for me anyways when using or running the system. Only on bench marks. FAUguy has provided a link @ [https://aka.ms/AAdjzw7](https://aka.ms/AAdjzw7 "https://aka.ms/AAdjzw7") to where he has this mentioned already in the Feedback Hub so please upvote it if you wish. I noticed by your post that you Also have a slowing of your SSD from Win 10 to 11. I also notice that you are running the Microsoft Driver from 2006, I'm also using the same drive as you .
Perhaps MS will Update this Driver for the Much Faster M.2 SSD.
Lets keep our fingers crossed anyways 🤞😊