All Cryptic's games have lag issues, though. Nine times out of ten when I was playing Neverwinter I'd clearly be out of an attack's range when it went off and then get hit by it anyway. Even normal blocking in CO only works for me half the time. The other half I see the block clearly activate and then take full damage and/or get mezzed anyway.
As far as I can tell, it's because the server isn't trusting where the client says it is. In most games, the client gives a position and the server accepts it as long as it isn't too wildly different from where the server thought you were. In CO/STO/Neverwinter, though, the client goes 'I'm right here', and the server goes 'Haha, no you're not.' Which is infuriating at times.