Thanks for bringing that to my attention. The file didn't have RAPHAEL in the filename, which is why I couldn't flash it. I've managed to flash the RAPHAEL MI9FOD Immensity Kernal successfully and haven't seen any artifacts on YouTube video yet, so it seems that flashing to the latest Immensity kernal has rectified the issue. Thanks Alin and antaris for your help!
OSS vendor means OpenSourceSoftware Vendor. This vendor is custom made and doesn't include MIUI bloats. Also, this vendor completely removes the need to flash another specific vendor for your device because it works on every model of Raphael. It is super smooth and bloat-free.