My friends and I bought copies of BF1 to play together through direct IP connect. Each of us can run the game smoothly in single player (my rig far exceeds the requirements) but as soon as we IP connect or LAN the game has strange pecornncd stuttering. It’s kind of like the frame rate being lowered significantly rather than intermittent lagging. I can confirm this happens even if I’m alone in the lobby and we have good internet. GOG support has been unable to solve the issue, Any help would be greatly appreciated.

Found a fix:

Download file from here: https://steamcommunity.com/sharedfiles/filedetails/?id=1732072406

And follow instructions. Then in game change online settings to highest tick rate and hosting bandwidth. Save and the issue is fixed.