CAN'T HOST SWF LOBBIES

So, I've ran into this problem with the game that for some reason i can't seem to host SWF lobbies. Every time i try too, 9/10 it will put me into the countdown lobby and the rest of my friends would get kicked back to the main menu, so I then have to back out of the lobby and re-invite everybody. Simple solution, don't host the lobbies, right okay, so when they invite me to their lobbies, 9/10 it does work we all get put in a game together, however, sometimes it'll will kick ME back into the main menu and display the "An unknown error has occurred" message (sometimes it kicks them out of the lobby too.) Also, if they invite me and i join but don't ready up, it has me on this 'imaginary 2 minute timer thing' where if i then ready up, sure enough I will get kicked out from the lobby back to the main menu and displays the "unknown error" message yet again.

One other problem, sometimes at the end of the match I would get the "Rank Update Error" message or the "Player Rank Update Error" message at the end of most matches where it kicks me to the title screen and after I click to start reconnecting again it displays the "No Network Connection" message.

I literally have no idea what is up with my game. I've tried deleting it, re-installing, re-validating game files, moved it from my HDD to my SSD, deleting and re-downloading steam and sure enough I still have the problem 4 months later.

I'm on pc and i know for a fact my pc can run this game with ease

Any one else having this issue?