Is anyone else having problems whilst casting phone to smart TV using smartview? As I have unlimited data on my s21 ultra and no WiFi at home I use smartview to watch YouTube on my Samsung 32" smart TV in my bedroom. Until very recently this has worked perfectly but now is unwatchable due to the TV picture freezing and lagging constantly. I have tried everything I can think of and checked my network speed/strength etc which are good. This problem has started since the June update but I think it may be something to do with YouTube and not my phone. ( if I cast videos I've taken with my phone there is no problem). I hope I've given enough detail for someone to be able to suggest what may be causing this.