New Core = More Crashes/Freezes?

[HonoR95]

Anyone crashing/freezing more often since core switch? In Dalaran, to specify.
I almost never had crash since I used that RAM fix thingy for wow.exe, also didn't have them on Lordaeron afterwards.
But now on deathwing game just keeps freezing

[Zardonic]

I have no crashes(beside the realm crashes)/freezes, try clearing your cache.