Black spots on screen?

Since the new Fortnite update of 10/4/19 (today), when I look into the sky, I have black spots (ONLY IN THE SKY!). Then all in all I have only 20fps instead of the usual 60fps.

my pc is actually doing pretty well

- always had 60fps

-cpu gets 60-70 degrees hot

-right good screen resolution

hardware:

8gb ram

win 10

intel core i 5 8th generation

intel hd graphics 6800

I do not think that it is the graka driver!

lg noel

ps: here is a picture

Yes. Is the game. Yes, yes.

Is just particularly reccoursen-consuming. Especially the Skybox!

And how can I fix this again?

Are not the points part of the update? "No idea, do not play it. But with the low fps you can only change if you turn down the graph or buy a new card.