Minidump Frequent!

Hello!

Im having issues with the "Minidump". I've played 3 matches online (where i was winning) and each time a major battle has occured, it minidumps. It really makes me unpleasent because those games have lasted about 1.30 hours which means waste of time and "destruction" of my fun, if im winning ...

Please help, because if this is going to be more frequent, then im unable to play this game online .

MrM.