Ok found it, I'm too tired to figure out if it has a relationship to the newest version, but the issue did begain after the restart to upgrade alive,
But it seems Spyder Add-ons, Ambiance mod had spawned a herd of goats, 2000 strong. I was left with no choice but to call in CAS and arty it was a close battle, I gave it all I could, but I'm sad to say the goats won.
I disabled the ambiance , and the server is back up to 40CPS and 40 FSP, objects are back to around 600