Flickering terrain

Same here. Ultra settings GTX1070.

Same here
dx 12
AMD ryzen 7 2700 8 core processor
GeForce RTX 2080 Super

same. Only on PTR Version of the game, in 4.9 all is ok.

I also get this terrain flickering black.

System: Win 10, up to date drivers, GPU 1080ti latest drivers, CPU 3700X, chipset X570.

Also getting this on Sapphire Nitro RX480. Windows 10.