I'm about halfway through 55. He's right, those Rams are pretty fun... particularly since they became better after a certain update. A very "fire and forget" sort of thing. Dive into a dangerous area, drop a few, dive out, get some free damage with no risk to soften things up. Cant go wrong with that. I take that particular energy weapon fairly often. I haven't seen what happens with too many of them though... I don't get performance issues on my machine with most games. But having a max-rams-at-once limit isn't a bad idea at all. Would just need to make sure that the weapon isn't gobbling energy on failed attempts to launch more.
There's an item that causes the player to spawn a ram when hit... how about giving that thing a big damage boost? The player isn't going to be dropping those at a rapid rate, after all, and they become a good defensive item if their damage is pretty darn high. That's a sacrifice item, too, so giving it lots of power isn't a bad move, I think.
Having some more items based on this concept could be fun. If we get some debuffs added, having Rams that inflict that could be very useful.
EDIT: Oh. It's not the rams doing the lag, it's the spawners. Right, I knew that....