I'm working on one of the BTS maps for a map pack I'm making, at one point there is a fling that involves jumping into a bottomless pit that trash is falling in (maybe I'll make it goo or a shredder, probably a shredder), I've made the dropper and everything and all 4 items are falling correctly and everything, just too quickly. I can't have wait for entity death turned on because then its too slow, but without it on it spawns really quickly and causes lag/crashing.

So: I need to slow it down.

Oops, should be in Hammer and modding section

How are you currently triggering it? You'll probably want to use a logic_timer to force spawn the trash pieces. That will give you control over how fast or slow they spawn and even allow some random variation.

It isn't being triggered at all, just starting enabled. so, logic timer, eh? Guess I'll try it out. But I may remove the trash, now I'm thinking its going to be an "abyss" like level to represent how dark Aperture is or something like that (mainly because I'm too lazy to go and re texture all the platforms the player walks on that are brushes from the tools/black texture to something else lol). I do have an "emotional" ending prepared that fits perfectly with my ideas for the rest of the map and that is even better if its a completely dark level (obviously you can see everything you need to)

I think it automatically spawns one entity when enabled. Try disabling it then triggering it to enable. When you want it to spawn more use the Spawn input.

Yes, use a logic timer with random intervals, and kill the dropped items at the bottom. You can enable/disable the timer anytime.