Thank you, I thought it was linked to that. I crashed 6 times yesterday with the last crash killing my GPu driver and disconnecting the GPU (rx 6700xt).
Went back to DX11 and nothing happened since. I've opened a support ticket with my logs, let's hope it gets resolved quickly !
And no, it's not related at all to the Network Issue, those are separated problems most likely coming from Cross Save deployment.