After the ghost changed to use random player names yesterday it got worse for me. I still couldn't climb a mountain because the thing prevented me to jump (not even one block high and at one point I got caught between the ghost and .. I don't know what. The edge of the block I wanted to climb onto? I had to relog, trying to catch the logout button as if caught on a fence). I eventually gave up on that mountain and went to do something else than exploring. I had to relog several times (and wait) because I couldn't place blocks, even after I teleported away and went back to the spot it wouldn't work until I relogged. Plus I lag heavily when just walking through our faction (which was NEVER the case before), seeing others jump around like the teleporter (Nightcrawler) in X-men, suddenly disappearing and turning up again two chunks further.
For me the ghost is now also more visible than before. Whereas before I had to look up and turn the camera to a certain angle or get hit to see the bot, I now always catch names of players I know, asking myself "How the heck did you get in here?", before realizing it's the anti-cheat. It's like seeing someone in the corner of your eyes. Switching the camera angle to the view from behind or the front is then enough to see the bot hoovering around me, switching names. It's really annoying to constantly think there is someone beside (not even above) me while playing from the first view and the particles give me a claustrophobic feeling of the ceiling crashing onto me. I first thought I would get used to it with the time, but it's annoying (to say the least) to play like that. It's like going crazy and seeing people everywhere, even thought there is "nothing".
In other words: I really look forward to more tweaks and adjustments and hope this isn't the final form yet.