Call of Duty Warzone 2 PC (Endless matchmaking)

Hello,

Sorry for the disturbance, I've never posted on a forum to ask for help, but I admit I'm struggling here.

As stated in the title, I have an issue with COD Modern Warfare 2 in Warzone, more specifically, it's recent, and this has never happened to me before.

To keep it simple, I start the party search, Warzone 2, with a friend on PS4 or alone, on EU servers, and no matter what, the search goes from <38ms then gradually increases to <200ms and even if I wait, no matches are found..
(I waited half an hour) :(

I have already:
- rebooted my PC and my box
- checked my drivers
- checked the game files
- tested another connection (4G tethering)
- I even did a full reset of my entire PC

And now I admit I don't know where to look anymore.. My colleague plays on PS5 and everything is fine on his side, however, whenever I join him, even if he is the one who initiates the search, the same thing happens, the search runs and goes up to 200ms and then blocks, and nothing..

Does anyone have the same issue as me? And/or have any ideas..?

Thanks in advance!

:)