I’ve been playing this game for years. I love it, in general, and play daily. The latest update (end of March, 2020), however, makes it almost unplayable. The game gives you higher scores for faster play (among other factors). It always has. But now the cards have an animation each time you place a card/stack, that has to complete before you can place the next card. That’s fine if you don’t care about working quickly, but it really slows you down! A ton of fractions of a second add up by the of the game, making it impossible to match the times you could get in the past. It also causes errors because you find yourself tapping multiple times for each move (when you’re solving quickly), and it sometimes moves the next card when you didn’t want it to. Ugh! Just too frustrating. I’ll have to switch to another game. It was better in the previous release. I hope they fix this.
Btw, the ads really are too annoying also, and they made the ads more aggressive now. You used to be able to play several rounds between ads. Now you get one every round. Pity. That just lost you a devoted customer.