Dropping to 1 fps

Hello,

I have an issue where when I'm playing the game drops to 1fps and won't recover until I toggle the quality settings.

This appears to be different to the memory leak others are reporting however as this can happen every few seconds rather than a low decline in FPS over a number of games.

I don't believe this is directly related to the memory leak bug either as I only use 5200mb of VRAM which doesn't increase. I have a 16gb card so there's plenty of headroom. I keep my settings on low as higher settings make the fps drop less responsive when in the menus.

Frames will drop from 140fps to 1fps in a moment without any warning.

It does appear to be related to the maps - the new golf course map is horrific and I will probably have to reset every 30 seconds or so.

The oil fields are another poor performer but that might be every few minutes.

Being in a chopper will cause it to trigger faster too which I assume might have something to do with more information on the screen?

Specs:

5800X3D

6950XT 

32GB Ram

Installed on NVME

Things I've tried:

Updating driver

Uninstalling drivers via DDU and conducting a fresh install

Removing HD texture pack

Toggling various upscale options 

I've attached a video below - just imagine this happening multiple in within a few minutes all game, every game.