How can I boost my speed other than going from left to right on the item list?

Tips that may help you increase your speed:

-memorize the objects in the scene, so you know them really well

-read the first 3 clues and find the objects when the scene is still dark

-double tap on the first clue (first tap activates the scene, 2nd tap hits the object)

-read 2-3 clues at a time, so you can hit the objects in rapidly succession

-give shortened nicknames to objects with long names

-practice, practice, and practice.

People using two hands on a touchscreen are the fastest.

Use both hands. Prop your device at a good angle if using a tablet.

Look at the list of 3 items it starts with and find them before starting the scene.