Reports are coming from users reporting that the DJI Osmo has audio sync issues on video recorded. I know that generally using the on-board mic that audio sync issues can only make the already crap audio a little worse but it happens when using god external microphones like the Rode VideoMicro also. Below is a great example created by Project Syncro on YouTube.
Not sure when or if this issue will be resolved or what exactly causes it ( I need to do more testing ). The next firmware for the Osmo from DJI is already overdue from its release date of then of November ( this was a quote from a Rep so not exactly concrete info ) so maybe this is why its delayed.