If you are referring to Qual, it'll be based on time (10 mins). If referring to the race, what Whizz said
considering its only 1 tyre compound, it will be either: conserve fuel and tyres till the end, or push and do a pit stop to refuel and put on fresh tyres..
We are using RM and RS again this season, so a pit stop is required for everybody and strategy will count for very little.
10L/S, anything less makes fuel saving OP, anything more is too fast to make an accurate stop in the pit stop. This may change slightly however as we test it tonight.