5/23: 10 mins. full swing drills w/OW, alternated w/Momentus for a couple of sets; focus on smooth transition and tempo through the swing
15 mins. chipping work in shop w/ball & wedge; focus on muting my wrist action and making crisp, consistent contact--finished drill by not stopping until I hit 10 consecutive chips with perfect contact...had resets after 6, then 5, then 6 (all 3 misses slightly behind-ball contact)...then I got my 10 straight. 27/30 is 90%, and a large improvement over the couple of weeks I've been doing this, but I want to get it higher.
I noticed similar ball striking results a few months back while practicing "easier" swings and a smoother tempo. I've been incorporating tempo drills into my practice and have seen (and enjoyed!) a noticeable and consistent difference. But...
If you'll excuse the DD HCI and allow me to offer my two cents... I don't think that's the question here. Your swing speed was slower. You also said strikes were closer to the sweet-spot. Seems @David in FL may have nailed it the first time.
I'd imagine it's possible you might also be doing a better job with decent angle and low-point, but I'm now bringing up more stuff I don't really know about, or whether it's even relevant, so I'll stop and wait for smarter people to chime in and hopefully learn something myself.
Either way, stick with it. Sounds like your on to something with your swing. Best of luck!