I have an Intel i7 4770 on a AsRock B85 Pro 4 and when i play some games my IGPU won't go full load and I have frame drops at that moment. The IGPU working at 600 Mhz while i an gaming and barely go up to 800 Mhz even it can go up to 1200 Mhz. Can anyone see the problem? It could be a MB problem?