I don’t get where this view comes from. AFAIK, officially Steinberg stated only their Sequencer products to be compatible.
This is consistent with what is stated here about Windows OS compatibility. But I do see how the message referenced first can become confusing (the last sentence This is why we can announce Windows 10 an officially supported operating system across the entire Steinberg product line.).
My case might be special, but at least I get regular dropouts with normal audio playback with the very same hardware setup which has been working fine ever since 2009 with Windows 7, 8 and 8.1. I’ve also opened up a ticket but haven’t heard back yet.