Videos do not play and/or only shows the first frame of video and freezes

[Xaffenn]

Whenever I attempt to run this, either via .scr or .exe, it will not play anything whatsoever. When the screensaver kicks in, it only shows the first frame of video, and remains stuck there. The preview on the first day I tried using this worked flawlessly, but now whenever I go to preview, I simply get a black screen. The video files themselves play however when run individually from my file system.

Aerial Version
I am using the latest available version on this repo. Of note, the old deprecated version from cDima works just fine, but doesn't have any of the same options built in this version of the app.

Additional context
I am using a pretty high end gaming pc (i5 12700KF, RTX 4090, 32gb RAM), so the hardware is definitely able to handle any file format, resolution and quality, up to and including h.265 and AV1 4K files. I also am using 3 monitors with this setup, two of them being 1440p and the other 4k.