After Zer0Virus said how it's seemingly only in places with reflections, I turned my real-time reflections down and haven't been having an issue crashing the past few days. This probably isn't a fix to those who crash constantly with DX11, but if your crashing is only certain area's or times of day[Aftcastle, Gridania's inn, areas where it's raining] it's worth a shot. So far it's the only thing that's worked for me.

To change your settings, in game go to: System Configuration > Graphics Settings. Under 'General' the first drop-down box should be 'Real-time Reflections,' Change that to High instead of Maximum[or potentially lower if you need to].