Problem with MP4 screencast not playing in course after uploading to LMS using IE11
I published a course created with Articulate 360 to my LMS using HTML5 w/ Flash Fallback. Every part of the course plays fine in IE11. There's even another MP4 in another slide that plays fine. When I get to this one slide though, which contains 2 MP4 screencasts, everything in the timeline plays except for the videos, all you get is the a view of the very beginning of each video.
The videos play when I use Chrome with the LMS, when I view the course in Articulate review with IE11, and when I published the sole slide as a separate course in the LMS and using IE11. I even took the sole slide, cut and pasted back into the original course, still nothing.
Another thing to note, when I leave the course and return where I left off, the video will actually play but then I get some weird transcoding that's occurring with the text(see attachment).
I've gone round and round with the LMS thinking it was something on their end. They state they're not able to replicate the issue and that I should look at the software. Any help would be appreciated as I'm starting to come under heat for not having this ready.