@gadget - I'm also seeing a slow decline in traffic, according to the GA trend graph. However, when I select the account in GA to examine, the trend percentage shows a green 56%. A week ago that number was more like + 5%. Graph going down, yet GA claiming an incredible rise. Go figure. It's all broken.
Yesterday was dead all day, then at 11am, 3 conversions within 10 minutes. This is what I'd consider an unnatural pattern. Why should I expect regularly spaced conversions? Simply because that's how it was for almost a decade. That's why I say "Welcome to the new Google".
One other issue, and I'm considering a separate thread for: How many claims by Google can we throw under the bus? Web spam, keyword loading, multiple domains, domain crowding, hacked sites, trust, branding, original authorship, quality and more. All the old blackhat seems to still thrive and evade capture by Google's "quality" algo. I don't expect perfection, but they are far, FAR from that.