have any of you played with expiry and scan-time i was reading lowering them will really improve getting shares in and out faster with scrypt and it has my work utility used to be 100+ less then the hash now its same or more.
these seem to really work good for my 2x 7970s.
"expiry" : "12",
"scan-time" : "6",
http://s22.postimg.org/9y1mpj6rx/cgw.jpgthanks, been playing with this for days and i think you've done it!

my efficiency hovering about 10-15% higher than before (per rig 165% to 196%) and no stale shares or getwork errors as yet. I'll report back in 24 hours with stats.