How old is your washed yeast? You'll want to make a step starter. Just start with a 500mL starter and work your way up from there. I'd say 1000mL will be plenty for a 1.060 beer. So start out with about 3oz. of DME in about a quart of water. Boil, cool, then pitch your yeast. Make sure to slowly bring the yeast to room temps. I like to take it from the freezer, wrap it in a hand towl, and put it in the fridge. After 12 hours or so, set it on your kitchen counter with the towel around it. A few hours later, unwrap it and let it sit until it's room temp. Then pitch into your cooled starter wort.
After a day or two, make another batch of starter wort with 6oz. of DME. Decant your current starter (remove the liquid from the top) and pitch yeast slurry into the new starter again. After a few days your yeast will be plenty active.
This may not be the correct way to go about things, but it's always worked great for me.