Preface
I am struggling with Windows 10 (Pro) network performance. Even when using registered IO (RIO) its not possible to receive more than 300k UDP packets per second in a stable manner - and this number can only be achieved when using multiple ports to spread the load onto multiple RSS queues under perfect lab conditions. I have posted related problem statements here and in some Microsoft forum. Keep in mind that they are somewhat older and make RIO (or my use of it) responsible for the observed problems (which it is not, as it seems). I even used a tool from Microsoft itself resulting in even worse performance than my own code.
Question
The post in the Microsoft forum (from MattJames-8087) resulted in an interesting comment which hints at filter driver level contention: "QoS and the component responsible for providing traffic filtering services". Unfortunately I did not get an answer to how I would be able to check if I am suffering from the same Problem. I found a somewhat related question but its unanswered and also is not interested in the contention part of my question. I therefore would appreciate hints on where to start reading about how I could profile this issue or rule it out altogether.
Thanks