I've only had the issue when sleep occurred (due to power savings), I never sleep manually and I hibernate all the time, without ever having any issues. I'm convinced it's related to sleep (sleep or hybrid sleep).
I've disabled power saving sleep, I'm on F21 now. No problems since then.
So I'm also suffering from this problem. I have an Gigabyte Auros Master v1.0, F11 firmware. Here's some background :
1. I tend not to shutdown, I hibernate. I've not experienced the issues with hibernate.
2. Every time I've experienced the corrupting of BIOS / NVRAM is when my PC goes into...