Update on the 2950x.
I was able to (with my stand-still farming, resolution talked about with Mirai before) run 86 accounts without an overclock.
When I tried to load up 87 that's when I started getting CPU hiccups (fps dips).

As I mentioned before I corrected a lot of the weird quirky behaviour I experienced-- however it turns out my motherboard was just faulty lol.
So who knows how much misbehaving is due to the new architecture vs just a POS motherboard.

When a working motherboard arrives i'm going to try out the 2990wx and see if I can push 150+ accounts at my farming spot.
Due to the low rendered resolution (573x240) the GPU hit is negligible however the CPU is thrashed when calculating all those numbers. For example, with 86 loaded and just standing around the 2950x idles at 30-33% CPU, the moment I start spamming my 1-2-3 it all jumps to 90-97% across the board.

I remember struggling to run through Orgrimmar back in the day on my Q6600 with only 4gb RAM... stuttering through... taking 10 minutes just to reach the warlock NPC... with just 5 characters.. good times.