Here are the steps I took.

  1. Start Game
  2. Show Question
  3. Answered 0
  4. Chose "Higher" (of course)
  5. Go to the cards
  6. Got a 5
  7. Chose play it
  8. Got a 7 and froze

Q2 form is then loaded and I see no flickering. What did I do differently from you?

BTW there's nothing that you can do as far as form creation that would cause flickering.