Undo very slow, even for simple actions like slice and move item

So I've moved away from debreath completely, as I found that it was faster to use remove silence and fix what was not perfect. I agree that in post it's very common to have a lot of item FX. Also (while we're still on this thread) when I undo a media item move or undo a track re-order, a bunch of my samplers will (sometimes) reload their samples. How come? Isn't there a more efficient way to do this without breaking anything?