You've posted enough that at this point, multiple different people on the forum are getting fed up of seeing it.
I already posted elsewhere that it seems like lately you're ready to jump on any mention of any bug or issue on the PTS, solely to vent again about your perception that the developers are "incompetent or careless".
...There's no reason for this...
...That you know of. That's exactly what I tried to point out in my other response - as someone with a professional programming background, I'd expect you to be considerably less ignorant than the average no-experience backseat-developer on a forum, and know not to repeatedly insult the intelligence of other professionals based on information you cannot possible have. You don't have access to the source code, you don't have access to their development roadmap, you don't have access to anything besides a compiled result, and you're using bugs in a test build as justification to repeatedly insult people.
I mean, take the framerate drop. Would it not be a far more obvious explanation that it's because they have changed something? Call me naive, but is it not a distinct possibility on the "public test server", that they might just be testing something? What exactly is your basis for knowing this is down to incompetence, and not just something they haven't informed you about because you aren't on the development team?
I say again, especially given your professional background - consider how you would feel if someone felt entitled to repeatedly critisize and insult your work without any possible way of knowing anything about your plans, methods, intentions, etc, etc.
I don't know the details of your professional background, but I'd guess that you don't have experience of large-scale game development environments... because your comments smack of "just enough information to be dangerous" - thinking that knowing what you do gives you sufficient insight into all other related areas of expertise to cast judgement.