So, you leave out EVENTS? I'll give that a try, even though, as you note, the receiver will try to schedule non-live programs. If you try adding EVENTS, that would help determine if that keyword is a problem. As I mentioned, the really noticeable delay took a couple of weeks to develop.
Edit: Actually, leaving out EVENTS as a keyword resulted in a lot of pre-game and post-game shows which I don't get (MLBEI). So, I'll try this:
AALL WHITE SOX CCHANS 665 666 & Show Types, Events
AALL WHITE SOX CCHANS 307 & Sports, Baseball
Yes, I have events turned off because I typically like to record Pre and Post-Game shows and I think I miss them if I do "EVENTS" in the search.