De-sync problems.

Hey guys and girls.

I was playing a Sins: Diplomacy game using LAN with somebody (I was hosting), and after about 30mins we found that my friend had fallen futher and futher behind in gameplay. Say if I had 10 planets at 1hrs of play then my friend would still be in the time space of when I had 3 planets in 10mins of play. Even when I saved the game and we both rejoined the problem would be the same- in some cases worse.

Now I have since been informed by a very kind 'GoaFan77' (Thank you) that this might be 'de-sync'.

So does anyone have any ideas how to fix the problem?