Well... Production turns take a bit, non-production turns don't. Most of my time IS reading up on the events. The real problem is that every other day or so, I get an interrupt from a civilian ship getting spotted somewhere new. Come to think of it, turning off sensors isn't likely to help much there.
I've already spawned a a great deal of what's going to be in the game. NPRs are pretty much finalized, systems are explored several out, etc. That's what took me so long before I started advancing time. I think (and hope) this means that things won't get much slower.