Hi. Lots of reports of similar behaviour here and on Steam forum. For my party of four, we had massive latency issues that I tracked down to being caused by the game saturating the upload of my fibre link (I was the host of the game) @ 14Mb/s. This explains why things looked fine for me but massively laggy for my mates. We've given up on BG3 for now until this is resolved as clearly no game should be using so much bandwidth and still expecting to be playable.
