Having desync issues online with me and a friend when we try to play and TSL Earth map. The game appears to want to desync around turn 1 or 2. The Terra script without TSL appears to work with on small maps to some extent. Running 8000~ or less assets from mods. I can supply a modlist or a LUA log on pastebin if you'd like. But nothing comes to mind that would directly interfere with the map.

I have the same issue with another TSL map mod for standard size (The optimized Standard Earth.) I figure it's likely something to do with some of the options both mods utilize and I'm guessing you both use similar systems.

I will test later with only the TSL map from your map pack and of course the regular dlc/game modes and see if there is any improvement. It's possible is asset/mod related so ill see what I can figure out.