mb77 Welcome to the club, Maggie.
My experience with CC being out of sync on The ROKU Channel is it only happens on certain recordings. Certainly not on everything I watch. Only a select few.
It seems that the usual answer from the moderators of this community is to "reboot" your ROKU device, your router, check other devices, etc.
My experience is that this does NOT resolve this problem. It seems that those movies or shows that I find out of sync remain out of sync. And always by the same amount of time. If "ProgramA" is out of sync by 10 seconds, it is still out of sync by 10 seconds the next day or the next week. (I have checked a movie a few days after I report it and it is always still out of sync. I have NOT checked a movie months or years later. Why bother?)
I have reported many out of sync problems. One time I was requested to make a video of the out of sync condition and forward it to ROKU. Are you kidding me? I just ignore their advice to reset anything. It is just a delaying tactic. Maybe to just make me go away. Sometimes the moderator says he or she will forward this information to someone else.
If EVERYTHING was out of sync, I would "reboot" the device and/or my routers, but I have never had this condition.
So, Maggie, I have no suggestions for you. We get what we get.
@RokuJohnB
I have the same ROKU devices I had when I answered these same questions in previous posts: 3 ROKU Express devices, 2 TVs with ROKU built in, routers vary between between 6 feet to 15 feet distance from ROKU devices.
I no longer "trouble shoot" this problem. In the past, when I have experienced this problem with your service, I have rebooted ROKU devices, rebooted routers, unplugged TVs and ROKU devices and ROKU TVs and non-ROKU TVs and my routers. NONE OF THESE actions made ANY DIFFERENCE. That is why I no longer do this. I just suffer.
I am merely reporting the fact that the CC on these movies are out of sync. Quit following your "script" of how to answer complaints and pass this info on to whoever can correct the movie audio / visual / CC synchronization.
Have a good day.