Well I was going to try and run the pathping but the lag has been pretty steady so far tonight (between the usual 25-60 ms). Thanks for the help, I will try and run it if it starts to happen again.
That is up to you at the end, pathping should give an indication of where the issue lays, but it will not fix it.
Logging into another region swtor servers may in fact be better as the path from your computer to the servers will be different.
What, you mean like play on a different server? I have 6 characters lvl 40 and above on Ebon Hawk (including 2 lvl 50s), re-rolling on another server is out of the question.