If what AshuraDX says is correct, then it's likely that you just have too much junk being rendered, or too long of a life. Heres some math for you. Suppose we have an efx file. In it, we have a simple spark effect that shoots out 6-10 sparks, with a life of 1200 for each. since the blade effect gets rendered _almost every frame_, that right there is 6-10 tris. Now suppose our client has 90 FPS. That means you're rendering 540-900 tris at any given point in time. For point of reference, the Galak model has around 1.2k tris. With more than one saber onscreen, it becomes obvious why there's issues.