The earliest recollection of this bug is traced back to PAN-OS 10.2.5 - December 02, 2024. This bug is fixed in PAN-OS versions 10.2.5, 11.0.3. The Palo Alto Networks QoS implementation now supports a new QoS mode called lockless QoS for PA-3400, PA-5410, PA-5420, PA-5430, and PA-5440 firewalls. For firewalls with higher bandwidth QoS requirements, the lockless QoS dedicates cores to the QoS function that improves QoS performance, resulting in improved throughput and latency. For more information: https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-release-notes/pan-os-10-2-5-known-and-addressed-issues/pan-os-10-2-5-addressed-issues https://docs.paloaltonetworks.com/pan-os/11-0/pan-os-release-notes/pan-os-11-0-3-known-and-addressed-issues/pan-os-11-0-3-addressed-issues