I only have my one Smuggler, so I cannot compare other classes, however I have indeed noticed that my gaming has been extra laggy the past few days. I also first noticed it when I got to Tatooine (and I began having strange graphical glitches there as well).
Last night it was so bad that I actually had to bail out of a Warzone because it was unplayable. That hadn't happened once since I bought the game (currently around Valor 17 or so).
I also run the game on a mac, but via bootcamp. We're in the same boat, but by the sound of it you seem to be getting it way worse than me. Try running it outside of parallels and see what happens.
