It think you are exaggerating with the ten minutes for one unit stuff. I'm sure it may have happened, but is likely the exception, not the rule. There are many possible explanations that you may not considering. Just because you have a sweet rig and blazing Internet, doesn't mean that their dual core is running well, or that their Internet isn't slow or being used by others. But *obviously* it's the game.
Getting back on topic and away from crazy achmed's hyjack, large maps are now even better! They were good before, but I recently played japan on a huge earth. Happiness needed attention at the beginning, but before gun powder I had all of Africa and the middle east too! I love building wide, and I'm finding it easier to do so post-patch. It's fantastic. Patch FTW!