Currently trying Proton IPTV for the next 3 days. Trial cost me $2.50 US. Using an NVidia Shield with a clean cache file and restart, directly connected to the net with Cat6, 60Mbps service. CP24 news and both Investigation Discovery channels are buffering constantly. I'm not impressed. I'll update in the next few days. I've tried with PIA VPN on and off. Same results so far. One more thing. I'm trying their "Electron" service.
I have tried Atom, it’s actually worse for me then proton or electron. Support is fast, and helpful, but buffering is just killing it all.