I've had the same problem I sideloaded vlc BETA it worked fine after that. Your mileage may vary.
Remember to uninstall vlc then install BETA use downloader app and this linkWhere did you sideload VLC beta from?
Cheers
Remember to uninstall vlc then install BETA use downloader app and this link
https://appsapk.com/file/download/VLC for Android Beta.apk hope this helps you mate
Let us know mate if it didn't work.
It does have it's glitches but it works for me you could try mx player but I don't think it can keep up with a live LINE for over 30 minI red a quick review of it and it’s made me a little unsure about using it.
Hope you find a solution have you tried the internal player ?
Is that v2.9.1 of vlc player or smarters?Just installed the smarters app on my other FIRE TV experiencing same issue as op it seems that v2.9.1 stable worked for me https://bit.ly/2AxpmO8
Although I am using smarters pro mainly on a Android tablet and as Firestick is android I can't see it being different,I have smarters pro version v1.7.6.3 (updated today actually and ran using it whilst testing) installed and using VLC version 3.0.1.3 with NO alteration of settings I tried films and other talking based media and I have had NO problems at all,and just to see if I get the same result on my 1st gen firestick I used the Easy Fire Tool app to transfer the player across so the same version player and the same version VLC player is now on firestick and got the same result lip sync is perfect across the same film and talking based media .hope this helps...G
search this forum and you'll find what you needYou can always try STBEMU Pro ( If you need a link let me know ) or Smart IPTV ( £5 one off fee )
That issue already solved Dear but I think it is not updated on Google Play Store.I have noticed after the latest update Smarters does not seem to load the channels listed in the bouquet when coming back out of full screen using vlc or mx but with player set to default it does. That's on firestick and formuler seems a bit buggy compared to previous versions.