[PC] Vagan in a Fortification daily mission, upon accepting his "deal", causes a game hang

Bug #: 3991079265

Deal inspecific, only happens in maps afaik. The map also does not matter.

Upon accepting his deal, he can randomly choose to "eat" 4GB of game memory, causing a white screen crash. That process has to be ended within Task Manager.

"Hello, Vorici in Research, you have a new friend. Even though your issue has been fixed."

in case they're needed, system specs:

O/S: Windows 10 Home, version 1903 (OS Build: 18362.418)
GPU: Sapphire AMD RX-460 @2GB-GDDR5

DxDiag report: Pastebinned.

Edit: this crash randomly clears OR Fills out the entire minimap of said map, or does nothing at all with the mipmap data. It is random every. single. time.

Irrelevant data (but could be useful in some cases):
Hideout used: Stately