Levitate Spell moves a target at F(meters) per Combat Turn, as per spell description.
Do you divide this up into the Combat Turn depending on the number of Action phases in the turn? Or do you just move it F(meters) during one Action phase? I'm assuming at most tables for simplicity sake most players/GMs just have it move once, which leads me to the below problem.
Hypothetical Situation: (and sorry I'm trying to get used to the 5e rules, please let me know if i have this right.)
Mage A and Mage B, both human, are battling. Mage A scores 21 for initiative, Mage B scores 18 for initiative.
Mage A goes first, on 21,fires off a direct spell at Mage B. Mage B declares an interrupt action (-5 initiative) declaring all their counterspell dice for themselves and is able to counterspell the incoming attack spell. Mage A also declares, as a free action, that all of their counterspelling dice are for themselves. End of turn 21.
Mage B goes next, on 13(18-5 for the counterspell interrupt), firing off a direct spell back at Mage A, who also counterspells and and defeats the incoming spell.
Mage A goes next on turn 11, they declare that they are delaying their action.
Mage B goes next, on turn 3, casting a direct spell at Mage A, spell is counterspelled again and does no damage.
Mage A declares that they are acting on turn 3 also, so as not to lose their ability to act, and cast levitate on a nearby car, say F10 or F12 and gets the necessary hits to move it.
Mage A gets to go last in the round, on turn 1, and moves the car up 3 meters to ensure it will be high enough and then over 9 meters to the enemy mage and ends the spell thus dropping it on them.
No more interrupt actions can be taken as both players only have 3 and 1 initiative respectively and thus cannot pay for any interrupt.
Run for your life cannot be used because no throwing weapons attack test has been made and no area-effect indirect combat spell was cast just levitate. Counterspelling cannot be used to defeat the levitate on the car because there is no resistance test and Mage B already used their free action this turn.
So, moral of the story i guess is that if you wait till last in a combat turn you can move things quicker??