I am having the same issue.
Also, occasionally it crashes with the message: "Unreal Engine is exiting due to D3D device being lost ox887A0006"
My Graphics Card is GeForce GTX 1660 Super
32 GB of Memory
I'm sorry you're experiencing a crash. You might want to try updating the driver for your GTX 1660. Here are some other tips about the issue: https://www.drivereasy.com/knowledge/solved-unreal-engine-is-exiting-due-to-d3d-...