Why is it showing d3d device being lost?

I start my game (FORTNITE) and after playing for 2-3inutes it crashes saying “d3d device being lost”. Please help i am not able to play from about 1-2 months. Please help me fix it.

Either driver issue or if you use laptop it switches to Intel CPU to conserve energy, check you power management settings and force oyur laptop to use NVidia GPU.

Either way this is UE4 development related site, for Fortnite help please contact Fortnite support: