Particles, shader bug in multiplayer

[Szii]

When I trying to play multiplayer, i have to set my shaders settings low in order to not get this weird black terrain. Also there are also coloured particles around players. popping almost randomly. Singleplayer is perfectly alright and beta was working fine. I have this issue from launch of early access on every multiplayer map in every match.
Things tried : Verifying game files
Reinstalling game
Deleting config files in documents
Updating graphic driver

Specs : Graphic card : GeForce GTX 1060 6GB
CPU : AMD Ryzen 5 2600 six core
Motherboard : B450M DS3H-CF
RAM : Kingstone DDR4 8GB 2x