Systems and methods disclosed herein host bus adapter (HBA) drivers to detect when execution of input/output (I/O) commands in urgent-priority queues is being delayed due to processing of I/O commands in lower-priority queues in NVMe subsystems, automatically identify which the lower-priority queue that is causing the delay, and mitigate the delay by throttling and migrating the lower-priority queue to the control of a controller that applies an arbitration mechanism other than weighted round robin.