Background video loops stop looping after a while

I use a number of video backgrounds that are just short loops - such as people in an office working behind me. I notice that after some period of time, not sure how long, they stop looping. My computer is not going into sleep mode, it is always on. Restarting Manycam resolves this. Any ideas? Thanks.

Hey @simonmason

Are you on Mac or PC? Could you please post a video illustrating the issue?