Still no fix for connectivity issues?

Hi AOEO community,

I write to you as a fellow lover of the franchise that one day found this masterpiece of a game and fell in love instantly, the only issue I ever had even when Microsoft was developing it is connectivity issues, you would be 1 hour into a hard quest/mission and "Lost Connection" pops up making all those hard Elite missions actually impossible to even play.

No way to reconnect, no way to load your progress, if you were in co-op your friend now has to do it all alone.

The issue with this version (Celeste) is that it's plagued by the same connectivity problems, I cannot even get through a single Crete mission (30 waves) before either myself or my friend being disconnected.

My PC and Internet is well above average

Ryzen 9 7950x, 32GB RAM, RTX 3080, 1TB NVME
1Gbps Download and 200Mbps upload Fiber connection

so what can I do to ensure no connectivity issue happens or is this a case of LAN is the only way for my friend and I to play this game/project together?

added info: Nothing on my PC loses connection, discord VOIP comes through perfectly at the time of the "Lost Connection" so if its not me or my friend? then what exactly is losing connection? the Celeste Servers?