I often got sound sync problems, lip sync, when the device is connected to Bluetooth headphones.
When I disconnect from Bluetooth and got sound in tv speakers it's all good.
It helps if I turn off the headphones, disconnect from Z Mini and then turn them on and connect again but when I switch between different clips on YouTube the problem seems to comeback.
Not only YouTube but also in other apps.
I think the Bluetooth connection on the Z Mini needs to be better optimised for audio sync.
Hope the Formuler dev team can check this out and solve the problem in an update för the device.
I've read several treads about audio sync issues on Formuler devices so we looking forward for this to be fixed.
Thank you!