Same sentiments on timed exams! I HATED them when I was in school and even failed art because I started hyperfocusing on the time. I can see similar traits in my son. He doesn't have any timed math drills at this stage, so thank goodness! Isn't the focus on speed rather than understanding so counterintuitive??!

You guys may already know this:
www.bigbrainz.com

This is the closest we get to a drill. DS loves the game, knows his tables well but hyperventilates at the higher levels because of the excitement level (that timing factor!). I let him at it whenever he feels ready.