fix: DataLoader freeze #27

Job	Run time
build	4m 3s
tutorial_particle_physics_a2 / run	4m 1s
tutorial_particle_physics_a6 / run	2m 10s
tutorial_particle_physics_1 / run	2m 13s
tutorial_particle_physics_a3 / run	3m 5s
tutorial_particle_physics_2b / run	11m 1s
tutorial_particle_physics_2a / run	24m 4s
tutorial_particle_physics_a1 / run	11m 58s
tutorial_particle_physics_a5	0s
tutorial_particle_physics_3a / run	15m 16s
tutorial_particle_physics_3b / run	10m 25s
tutorial_particle_physics_3c / run	13m 2s
tutorial_particle_physics_a4 / run	2m 9s
tutorial_particle_physics_4a / run	2m 12s
tutorial_particle_physics_4b / run	2m 16s
tutorial_particle_physics_4c	0s
	1h 47m 55s

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