MSTMSTMST

Hi everyone, we saw a strange performance loss in decrypting veracrypt (1.25.9) containers on our linux machines when we updated our kernel from 5.5.3 to 5.10.174. The reading speed from within the containers (dd, 4 GB file, blocksize 1 MB) decreased from 500 MB/s to 400 MB/s. At the same time the raw aes-xts performance increased by roughly a factor on 3 in "cryptsetup benchmark" (700 MiB/s decryption --> 2067 MiB/s decryption, aes-xts, 256b) which is a very significantly increase. Can anyone explain...