[2022] Game Crashes Every Match

I am experiencing a similar issue to this thread: https://discussions.ubisoft.com/topic/161186/consistent-crashing-in-multiplayer/2?lang=en-US

The game will crash 1st or 2nd round every time I try and play multiplayer but not in lone wolf training grounds. The crash will normally begin with a stutter then a visual glitch where some HUD elements become stuck in place on screen and others such as player names and text chat disappear then the game will fully crash, I have had a blue screen on a couple of occasions. I have now spent 6 hours troubleshooting to no avail. Being an advanced PC user I have tried every "solution" I could find online along with ones I thought of. My game worked fine last week and this weekend it no longer works, only one thing has changed on my end and that's only a headset but to be sure I went back to my old one and the game still crashes. Also of note, my CPU is overclocked to 5GHz but have been running the game with my GPU and CPU overclocked for years with no issue.

Another issue is the Ubisoft Connect app will log me out citing a lack of activity while I am sitting here using the PC...

Here are the things I've tried that I can recall:
-Rolled back my Nvidia drivers with a clean install
-Updated Windows
-Disabled my GPU overclock
-Reinstalled the game
-Ran the game in both DirectX and Vulkan APIs
-Closed all other apps running on the PC
-Disabled all overlays (Steam, Ubisoft Connect, Nvidia & Overwolf)
-Running the game as admin
-Disabling fullscreen optimisation
-Adding rules to windows firewall for RainbowSix.exe & BEService_x64.exe
-Disabled cloud save sync in Uplay
-Disabled Windows "game mode"
-Uninstalled the Ultra HD texture pack.
-Verified integrity of game files on Steam
-Deleted temp files from Ubisoft Connect & Steam
-Reinstalled Ubisoft Connect


Motherboard: PRIME Z370-P
Memory: 32GB @ 3200MHz
Storage: M.2 & SATA SSDs
Processor: i5-8600k (OC @ 5GHz)
Operating System: Windows 10 Home 64-bit
DirectX Version: DirectX 12
Display Device: NVIDIA GeForce RTX 2080 (OC @ 2085Hmz Core & 7375HMz Memory)
Monitor: XV340CK P