Yeah despite what these guys are saying, I absolutely have needed a vpn with iptv. My isp throttles my connection at random times and using a vpn completely solves this issue for me. Removes all buffering.
I use Windscribe and has been perfect for me but haven’t really tried many others. Windscribe was recommended to me and worked great off the bat so never bothered looking further. Im sure there are tonnes of other good vpns out there so just try another one out with a free trial or something
Edit: I assume picking the right location is also important. My iptv service provider instructed me to select a location in Canada. This is probs particular to my provider (likely where their servers are setup) but thought I’d mention it incase it ever helps anyone out