My friend and I notice this alot, and even when starting a new multiplayer game where we start the game and the game itself is moving at speed x2 or even x4. Has even happened with another friend hosting, and currently the only way to fix it is for me to load into a single player game move the speed away from x1 to x8 then back to x1 then exit and start the new game. Anyone know how to avoid this bug all together?