-When special effects begin disappearing or rendering incompletely. Examples seen in grenades, explosions, rockets, lightsaber sparks, etc.
This engine is obviously not designed to handle too many special effects happening at once. The same sometimes happens on Saleucami, simply because there are so many special effects rendering at once: smoke, fire, ripples on water, mist and fog traveling in the air, hundreds of explosions and laser blasts from vehicles and soldiers, etc.

Has anyone found a work-around to this? It seems like something that could be fixed by increasing some memory pools

I think I've said this before somewhere, but if you look at the BF2 logs it will say something about increasing effects memory pools. If you add those into the LUA however, it doesn't make a difference and the effects still won't appear. Try it yourself, maybe it'll do something for you.