Strange crash that DOESNT CTD

Hi all.
for the past few days, i have been experiencing a crash that freezes the game, the mouse curser still moves, but the game freezes with sound only and the game is still showing the image.
I have mainly noticed this after ATC gives an instruction to me or a AI aircraft. it happens randomly at any point, and not been able to complete a flight for 2 days. Only way to exit the game is to resart the computer as i cannot Ctrl+Alt+Del or alt+tab.
i have reinstalled the game, cleared all mods from folders.
I am getting a error in event viewer, not sure if it is relelvent, but i am, hopfully, talking to the GPU manufacturer regarding the error too.
system specs: Ryzen 9 3900x
2080super
NMVe hdd
32gb ram
the error is:

Log Name: System
Source: nvlddmkm
Date: 21/01/2021 13:51:54
Event ID: 14
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: Richard
Description:
The description for Event ID 14 from source nvlddmkm cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer.

If the event originated on another computer, the display information had to be saved with the event.

The following information was included with the event:

\Device\00000092
CMDre 00000001 00000220 60000fff 00000004 00800000

The message resource is present but the message was not found in the message table

Event Xml:



14
0
2
0
0
0x80000000000000

17225


System
Richard



\Device\00000092
CMDre 00000001 00000220 60000fff 00000004 00800000
0000000002003000000000000E00AAC0000000000000000000000000000000000000000000000000

Try running command prompt as admin then run: sfc /scannow it will check files and repair them if it finds any missing or corrupt.