I was just a lv 20 something jedi on Tatoonine, and there was about 2-3 massive sith attacks on one of the Outposts every day, by massive I meant a full ops of Imps storming into the outpost killing every NPC and player. Eventually an equally large group of Rep players would mass in the outpost and respond in kind pushing them back.
It's definitely doable. It's 2013, most people don't run games on toasters anymore. If your machine can't handle it, don't do open world pvp. But don't ruin the fun for the rest of us that CAN play it and WANT to play it.