Just as an update: The issue is still present. Following multiple suggestions of users with similar problems (e.g. [1]) I'm now trying to make the issue go away by setting the following kernel parameter > # /etc/default/grub > nvme_core.default_ps_max_latency_us=5500 If this doesn't help the next step is to return the SSD as the hardware might be faulty. [1] https://forums.debian.net/viewtopic.php?t=146747