So I need to start using custom views again

[MiRai]

Thats cool if this is the case... before it was letting you do it while logged in but when you logged out you'd lose all your saved views. If its working now... the next question is, how do I get jamba to tie in the /script SetView(2);SetView(2); on active window changing? Or do I just need to go back to using a macro?

In your ISBoxer character set each slot has the ability to execute a macro upon switching windows, this is where I do it.

No I am not sure at all. I did go and upgrade all my add ons after you told me to though, addons I use:
Isboxer
jamba
vuhdo
omen
recount
smartbuff

Well, depending on where you are or what you're doing when the drop occurs... I would disable every addon and go re-enact
that scene to see if I could reproduce the problem without any addons installed. If I couldn't I would then load one addon at a
time (since you don't use many) and keep doing that until you find out which addon alone, or in combination with another, is
causing the issue.

Large FPS drops don't normally magically happen with a patch that hasn't really changed much.