I believe the BIOS simply makes OC mode clocks the default. I should still be set to OC mode clocks if I set it to that mode in the MSI software, if I'm not mistaken.
I haven't tried installing Afterburner since installing the 1070, I was using it with my previous card and having issues with the program itself (couldn't autostart with windows since win10 upgrade, task scheduler errors).
Also, it seems LED control through Nvidia Experience doesn't work right on the Gaming X, while the MSI app lets me control it. However, many color choices result in a scrolling band of two different colors (if I select orange, red and yellow stripes will scroll). Is that normal?