YES! I made a forum account just to say thank you Tony. For the past 10 hours I've been looking through every single new thread that was made for the D3 crash. I tried every solution, first uninstalled D3 and reinstalled D3, then uninstalled and reinstalled Demonbuddy AT LEAST 10 times with each time having EzUpdater update everything yet to no avail. Uninstalling .Net and C++ and reinstalling them yet again, to no avail. Then I just clicked on the link you posted above and BAM. Found out the problem was my nVidia Geforce Experience was 1. Bugged and would not open at all even after multiple restarts, and 2. Even though it was bugged my ShadowPlay was still running in D3 which was the caused of all the crashes.
Sigh... what a relief. Thanks again.