Well, I'm all for making more noise, creating a support ticket where at exactly?
Intel obviously takes its time, not even confirming the issue and leaving it to a bunch of individuals to list all affected products.
I'm using OEM versions of Windows 8.1 without Microsoft software support so (for me) that's a dead end as well.
The motherboards' vendors? I already did and to quote ASRock Rack: "it seems that your issue is rather critical." but also, after I asked them if they had a more direct partnership with Intel than a personal end customer since they design various products equipped with multiple Intel components I received "We can try to attend Intel on this but we don’t have that much of influence as you think. We also depend on when or if they release an update." and that's coming from the server/workstation branch of a motherboard manufacturer.
I myself came across this by trying to use SMB Multichannel in a home setup which relies on RSS working properly.