VERY like WoW, I played it for a year and leveled two teams to 50. I went back to WoW due to, at the time they said they were not releasing any expansion and so it felt a little stale after a year. They did release Storm Legion expac which now has a level cap of 6 and increases the world size by 3 times.
The graphics are a lot harder on a machine BUT they look REALLY cool for some vistas. You can run your slaves in low render mode and the main in medium, that will save some gpu processing though.