Recently updated to El Capitan 10.11.2 and Alfred 2.8.2 build 483.
Now there is a noticeable delay after invoking Alfred before it will accept characters typed. I'd say about 3 seconds. This only happens after I haven't used Alfred in some time. So, for example, I might wake my Mac from sleep in the morning, invoke Alfred, then notice the delay. After that, there is no delay. However, if I don't use Alfred for a while, then the delay returns.
I has an unfounded suspicion that this has to do disk activity, but not sure. Also, this is new behavior since the OS upgrade.
Any suggestions?