First of all, love the game! Bought it for my Windows Phone and Surface Pro. Now to the business end:
Both of my issues may be related. Also, I'm not sure if they are specific to the Surface Pro, or Windows 8 in general. Both are in the "Skulls Anywhere" mode.
1. Sending a turn takes quite a while on my Surface Pro. I'm not sure exactly why, as my Windows Phone (Lumia 920) sends them very quickly. It seems like it's waiting for the game to save, maybe? Since eventually it will flash the "Saving..." or something along those lines at the top-left of the screen, then immediately sends the turn after.
2. This may be related to the first issue. When finishing an opponent, I get the "Winner" screen, only to find that the move didn't seem to send. The only way that I realize this is by going to the particular match, and it shows it's my turn again, and I can replay it indefinitely. This seems to happen more often when I knock my opponent's general off an edge.
Hope this helps you guys sort some things out.
Thanks!