No video at that link? Just getting a pic of character selection?

May be a driver issue or something weird with the bus controller or something. Could be a hardware issue---power fluctuation, hot spot around he drive or bus controller, or some other anomaly with your system affecting RAM or any other subsystem during the transfer. The game is pulling a lot if data but it isn't managing how fast/slow the data is delivered--the drive/bus controllers and drivers/firmware manage the data flow once requested.