I have the same trouble as Declonus said in post #7.
I only use DD's and only all the US ones so far. While playing the Mahan all the graphics on the screen starts flashing on and off, more off than on. I updated my graphics card in case it was that...but still the same.
This includes the chat box, sights for guns and Torps, mini map as well as ship info, so I cant aim, see when weapons have reloaded or anything. Please sort it out quickly, the game is unplayable...and some feedback here would be nice too please.
FYI: Win 7 ultimate, 64 bit. Nvidia GeForce GTX. 750Ti 24 GB RAM.