Video driver crashing after update to 84
I just updated from 55 to 84. Immediately the video driver started crashing. After three crashes, the video driver bans Firefox from using video equipment. It still works but the CPU usage in YouTube is up and the fan is spinning all the time, which it didn't do before the update. I reinstalled video card driver. I reinstalled video accelerator driver. I reinstalled the damn firefox too and then I did a clean installation. NOTHING works. Any advice? Or is it yet another "unexplained" problem that will never be solved?