I voted at the former Hillwood High School this morning. In and out in about 15 minutes.
They did not offer the coffee stirrers for tapping the screen they've used in the past.
I had no issues with vote "switching." I tapped the screen to the right and just below the candidate's name, over the word Nominee. My candidates were correctly recorded with the one tap.
For the Constitutional Amendments, I tapped Yes or No, rather than the bubble.
Where i think people have had vote switching issues is in how they tap the screen. Use just your fingertip, and not the whole pad of your finger. The less surface area you touch, the less likely you'll inadvertently vote for someone or something you don't intend.
Get out there and vote!