Closed captioning out of sync

I am trying out the Channels DVR for the first time this week, using Locast and Sling. The one thing recorded through Locast has been giving issues with the closed captioning not being in sync with the audio. Is that something I can fix on my end? This is installed on a Windows computer, playing back through a Firestick.

Is it in-sync on locast.org website or app?

My wife recorded one program (General Hospital, don't judge) on a Locast channel and 2 other programs through Sling channels. It was a noticeable problem on General Hospital. When I was watching live TV on the Firestick app, I didn't notice any problem. This has only happened in the last 2 of 3 episodes of GH recorded.