Moreover, the first messages about this flaw in Windows 11 were voiced by users at the beta testing stage. Most often talked about slowing down NVMe SSDs from Samsung and other brands.
According to one user, when testing the random write speed, the results dropped from 2320 MB per second to 983 MB per second. Also, some users say that after installing Windows 11, even if you install a different OS on the SSD, the speed still remains low.
There is probably still no solution to this problem. As noted, Microsoft has not yet officially responded to user complaints.