"On my CM10.1 Galaxy Nexus, it's really quite slow (3-4 seconds to do anything when I try to click on the search bar or swipe it up from the bottom of the scree

"On my CM10.1 Galaxy Nexus, it's really quite slow (3-4 seconds to do anything when I try to click on the search bar or swipe it up from the bottom of the screen)." Try disabling "Hotword Detection" in the voice section of Google Now settings. I also run CM10.1 on my GNex (toro), and that made it open and respond almost instantly.