While scanning the HOI forums, I came across this post by Johan.
Now, all three problems are known to affect EUII as well, so here's hoping that these changes will migrate to EUII, since the MP components are very alike
Originally written by Johan
Good news..
We've found and fixed three problems with the startup procedure.
1) Ingame savegame-transfer was taking about 20-30 times as long as it should. This has been fixed.
2) A problem which caused the game to crash when leaving the lobby was identified and fixed.
3) Leaving the lobby should no longer corrupt the lobby for everyone else. Ie, if someone joins your game and leaves, you no longer have to restart hosting the game.
Now, all three problems are known to affect EUII as well, so here's hoping that these changes will migrate to EUII, since the MP components are very alike