*Let's say I am playing an online game and I need to escape from cops*
''Come fast and get into the car (talking to a friend), don't delay/slow my gameplay!''
Come quick! 'Game play' is two words.
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" . . . don't delay/slow my gameplay!'' The word 'gameplay' seems unnatural to me here.
I'd just say eg " . . . . don't slow me down!"