One that seems rather important but missing is NIC receive coalesce. The feature delays frames to reduce the number of interrupts, thus increasing latency. Usually you want to turn this down as far as possible, but don’t set it to “1” because many NICs interpret that setting to mean “use black-box adaptive algorithm” and you don’t want that either.

It’s also quite helpful to run your Rx soft interrupts on the core that’s receiving the packet, but flow steering isn’t mentioned.