I play Civ V on a laptop. I use DX11 because under DX the icons and interface are all messed up. I play on the lowest settings graphically except for three things: Fog of War and Water are on Medium. Leaders are on low, so I get the simplest animated leader possible. It works excellent except for Kamehameha. If Kamehameha appears and asks for something, and I respond too quickly, I can't get his image off of the screen unless I exit to windows. This happens with no other leader. It doesn't happen if I start a dialogue with Kamehameha. And it is inconsistent, sometimes he'll popup, ask for open borders or something, and leave now problem. Other times he'll show up, ask for something, and when I respond it freezes the game. Not sure if there's a fix or solution, but wanted to report the bug in case it was unheard of by others.