Okay, so I'm not losing my mind as well.. I am having similar issues with my R3 as well and nothing seems to work. It's very temperamental, was working fine earlier today and now my upload and download speeds are all over the place. It's very frustrating especially when your trying to game and are getting huge lag spikes of up to 1000ms in WZ. QOS can't work if the routers throughput is inconsistent as it is right now.
What really bothers me is the amount of bugs in this OS.. like seriously, we're just beta testing in hopes that the fixes come sooner than later so we feel like we didn't waste our money. I like the concept of netduma and what the OS is suppose to do, but this is not acceptable. Been stated by an employee here that a new firmware is coming out this week. Let's hope that's true because if not, I need to pick up a spare router in the meantime before I lose my mind.