Maxed out maps crashing both client and server

Hi, everybody. Looking for some help with fractured beyond full delirious maps. I've getting either unplayable FPS even on minimals, or even client crash, or server stop responding (everybody stops moving for a while, client works) - i'm getting kicked off. If you experienced this, share some solution tips please.

Specs:
I5-9600k (5Ghz)
Nvidia 2070Super 8gb
32gb DDR4
Samsung EVO 970 SSD.

Windows 10.

Nvidia Driver: 451.67+
Played both DX11, Vulcan.
Played both standalone, steam clients.
Played both min and max settings.

Playing as flicker.

Server crash, O rly? When everyone stops moving but the client still runs, it's visual queue that you are dumping loads of packets without an address.

The server is perfectly fine, it's you connection to it that's crapping out.

I just meant I do not getting any reply from the server, so it isn't able to respond to packages I sent, that's what people call crash sometimes.

Hi,

So what's the fix for this?

I've experienced the same thing - High/unstable MS and often crashing.
screen freezes, can't do anything but the game moves on and I die.

Can you please advise what might be wrong?