I've been mining on an average of around 12kh/s, but mostly its at 13k/s. WHen the hashrate drops to 12 it only stays there for around 5 to 10 minutes at the most. I usually mine from 9am to 12am. When I was receiving coins my miner was in sync with the graph, all the shares my miner showed were shown on the graph.
By percentage of efficiency do you mean the percentage next to each share? They're at 100%.
I did add the psuedo difficulty again, I used "+0.00011641"
Does anyone know another CPU miner I could try? I'm currently using scrypt gui miner.