amazon®ion=GB&placement=B01N0ECL5F&asins=B01N0ECL5F&linkId=390e5f6d68be3f190665525b33f05675&show_border=true&link_opens_in_new_window=true"> had a provider for a while now and it’s been good. I’m getting 70mb off peak to the box and 35mb peak to the tx3 mini box. But I’m struggling to play anything hd it’s constant buffering or I get invalid format come up using iptv smarters even though it’s played for a while ok but it’s been buffering a bit. Sound Carry’s on and pic goes off I’ve tried hd vod to and that doesn’t work either. I’ve tried numerous providers and this problem is being repeated on each one. Sd channels stream all day long. I can stream 4K on YouTube and hd videos elsewhere just not iptv. What’s causing this iptv smarters ? ISP knowing what I’m doing and throttling iptv? I can stream ha channel and speed test the box at the same time and get 35mb in the back ground yet it’s buffering or saying invalid format ?