I have submitted my file, and my dxdiag file. Unfortunately, the Bug Report form link doesn't take me to a Bug report form. I have included a screenshot of what I'm getting when I click that link along with the requested files. Looking forward to hearing your response on the issue. I would love to be able to render these videos out at 4K within my timeframe. I've still got some time if we can find an answer in the next day or two. Thanks again!