I'm glad someone's taking a positive view of all this...
I'm really not looking to start one of those multi-quote / here's where you're wrong exchanges - all I was actually trying to highlight was that if an app starts to emit smoke and make odd screechy noises, it's usually a sign that maybe it's being pushed a little too hard. A sensitive user might then back off and let things cool down - and maybe look for other ways to achieve the same result. Just because Evernote accepts searches and tags we shouldn't necessarily expect it to be accurate up to 1,000 searches and tag changes per minute. The software isn't necessarily the limitation - it's how fast things can reliably get updated over wifi through multiple host applications (Elektron / browsers etc.)
We have less than a dozen people posting here who are suffering from the issues, and several who are absolutely not - and those who reach these forums often may be seen as a little... assertive... sometimes. The jury's out on whether this was a world-shattering bug or a relatively minor glitch.
However - I absolutly do not imply that you're wrong in anything you've said; neither of us actually knows what the problem is here - hopefully we'll find out more when the next version is released.