To benchmark the encryption if you suspect CPU related, try cryptsetup benchmark though it's more useful if it was run prior on your previous OS installat

To benchmark the encryption if you suspect CPU related, try cryptsetup benchmark though it's more useful if it was run prior on your previous OS installation. For storage, fio [1] may be useful but that is a much more involved topic and having baseline tests run in your former OS that you said worked fine. [1] - https://fio.readthedocs.io/en/latest/fio_doc.html https://fio.readthedocs.io/en/latest/fio_doc.html