Synchronisation works very well and stably for me. Very rarely it fails briefly, then you have to reconnect, but this only lasts 20 seconds and then you can continue watching.
However, there are programmes such as Netflix that block synchronisation. In such a case, you would have to log into the Wifi directly with the beamer and then watch via the Netflix APP from the beamer. (Also works with Google Chrome etc...)

By the way, you can find the detailed instructions for the beamer here:
https://www.viewsonic.com/de...

The best thing to do is to contact our customer service directly so that your request can be checked individually: https://helpcenter.digitec.ch/hc...

*abspielen will