BigBox Preview videos freeze whenever I change monitor after 13.21 update

[Taamo]

After the recent update, every time I change the monitor in BigBox settings, the preview videos for games/systems will be a black screen for a few seconds, then glitchily come back in and play normally. the audio plays normally during all this. However when picking my primary monitor, this does not happen. Any idea what could be causing this? For the record, I already tried it with default theme etc and no dice, so its not a theme issue it seems. Attached are videos of primary monitor vs a second/third monitor for reference. I also updated to beta and this doesn't seem to have changed the issue. As you can see, it works just fine on my primary monitor, then breaks on the other monitors. 

[Taamo]

Anybody willing to help me out on this?

[Taamo]

So far I have tried manually changing the video playback in the xml files to VLC instead of Windows Media Player, but it always reverts back to WMP for some reason. I have VLC installed on my PC. It plays the video files normally for the most part on VLC. Its only Bigbox that does this. It seems options have been removed from Launchbox since I no longer have the option the change the video playback from WMP to VLC inside Launchbox itself every since 13.9 (it might have been earlier and I just didn't notice.)
It can't be a drive issue in my opinion, because these videos have no problem loading on my primary monitor, it is literally ONLY when I switch BigBox to either of my other 2 monitors. For the sake of testing, I also switched my primary monitor to my TV, which is the one used in the videos sent, and suddenly it ALSO loaded the videos with no problem. So this is some kind of issue related to non primary monitors I'm assuming? But I never had this issue before. I hate to keep bumping my own thread here but could I please get some help with this? I really have no idea what else to try