[2022] Rainbow Six Siege x VirtualBox = Problem

Okay, guys, I'll try to summarize the situation:

On the 10th of November I re-installed Oracle's VirtualBox on my computer for work, it was already around 10 pm and I had played our dear Siege two hours before and it was working normally. When installing and trying to play then, a few hours later the game simply enters a match, for an entire round it works normally... Until when it comes to changing rounds. Then the game just closes. No error messages, crashes, nothing. The game just closes.

Apparently the game doesn't work well with VirtualBox installed on the computer. I'm a DBA and I work with database so I use virtual machines for various functions besides machine learning but I assure you: It has nothing to do with my use and rainbow six siege. So the question remains: How can I play? If I uninstall VirtualBox I lose years of work. And I don't want to have to dual boot just because of an online game.

To make matters worse: I called Ubisoft support and they sent me an article about connectivity. All my modem ports are unlocked as I need to use different type-ports to work... Besides that I have 600MB of internet and play around 9ms..