God knows i am no expert on the CTTP challenges, or the Stroke play in general, but I have learned a small technique that has saved me many an errant shot due to the swing meter skip, jump, lag, whatever you want to call it...
Let it go. DON'T click to hit. As soon as the meter skips on the way down, close your eyes and ignore the shot. Think of it as a practice swing.
Granted, this doesn't work on all shots, sometimes the meter skips JUST before the line, right after you've committed to clicking... but, it does help with the majority.