yup same here, i Have a PC that runs Skyrim on ultra or sometimes ultra-high. and i get 15! YES 15 FPS at ALL times except in ship where it jumps to 70..... the indicator is always green (idk what that means) sometimes the game runs at 40-50 for a few minutes then drops back to 10-15.....its sorta playable, but come on, i have a new PC that runs almost everything out there i should atleast get a decent FPS..
now to the abilities lag, i have had this issue since day one. also as a healer, i find it troubling. not to mention that casting is NOT SMOOTH like wow for example. you spam fireball and u see a cast bar, u click the button just before the cast bar is done and so on and u are hence spamming fireball while looking at the cast bar getting filled over and over and after each time it fills the character sends out a fireball...now in swtor its not the same.....the story is as follows. u click...u dont know if the guy recieved the order cuz its been almost 1-2 second since you clicked your castable shock spell, so u click again and aagain, (u dont revieve any message saying that the ability isnt ready) then he shoots out one shock spell ( the bar fills half way, then a little lag, then u see the spell hitting) so you cannot spam castable spells, instant spells are a little laggy but work mostly (melee included)...
this seems to be a very basic thing that the game should have...............................in conclusion horrible FPS, horrible lag (140-150 ms) ( i play wow at 300 ms usually no problem, other MMos similar latency also no problem)