Very good
Tested in dual boot with windows 10 pro and ubuntu 20.04, everything works without problems (with UEFI and secure boot enabled, the card is also ready for win 11 with tpm 2.0 support). The installed processor is a ryzen 5 5600x, the bios of the card was directly compatible with it (be careful to confirm that your card is delivered with a recent bios by ldlc otherwise it is impossible to upgrade the bios without a processor of the previous gen....).
Two disappointments, firstly the manual is not very explicit for some bios options, secondly asrock is a bit mean with only 2 sata cables provided.
So far so good.