I am sorry for the delay.
I already reproduced the issue reported when using systems with Intel® HD graphics 520, Intel® HD graphics 620, Intel® HD graphics 630, and Intel® Iris™ Plus Graphics 650 and the environment described at the beginning.
The video is not rendered correctly and the grey patchy image also showed up when using Intel® HD graphics 620 and Intel® Iris™ Plus Graphics 650. It does not happen when a system with Intel® HD graphics 520. I will forward this information to the proper department.
We will investigate this issue further in order to provide a detailed answer about it. Thank you for your feedback.
To continue investigating on the bug report, please attach the following reports to have as much information as we can about the system you are using.
1. Right click on the Desktop, and click on Graphics Properties.
2. Click Options and Support, and then click Information Center.
3. Click on Save (save it in your desktop).
4. Attach the report.
Also, please fill out the following information and attach the missing reports. I can see that you already attached a DxDiag report.