Alright, here a few more words on the subject.
FHD stands for True Full HD, or a true resolution 1080p - requires anywhere in-between 10-14mbps constant stream. Besides this you also get HD - res. 720p, or a stripped down/highly compressed version of 1080p, requires anywhere in-between 5-10mbps constant stream and SD - res. 480p, requires anywhere in-between 2.5-4 mbps constant stream.
Most mediocre providers give HD and SD. The good providers have HD & FHD for you to use. A good provider would do VPN for you on his backend, so you don’t have to. A mediocre one won’t. Obviously the small, cheap and widely available providers are mediocre. If you are forced to use a mediocre provider, or unable to find a good one, than you have a following dilemma: to use, or not to use a VPN. It depends on the country you are located in. Because some countries have a legislation that regulates IPTV piracy, which contemplates punishment not only to the provider, but also to the user of such type of media. Some countries have a regulation for IPTV piracy, but which does not contemplate punishment for a user, only for the provider. And finally there are countries, which either do not have legislation for IPTV, or do not apply it. USA for example, because of the greediness of ISPs and the corrupt ways of Trump will always require VPN, and possibly in a near future will block illegal IPTV altogether if technically feasible. Countries like Netherlands and UK take themselves very seriously lately, so there a VPN is advisable. Also people in France and Germany should be a bit cautious. Although I am no authority in any shape or form, in my personal opinion the rest of the world can use those IPTV services without a VPN, for the moment at least. What is going to happen in future, no one knows. And again for whatever reason you are forced to use a VPN you will not be able to watch IPTV in FHD (true 1080p). Today impossible, in future, who knows. Unfortunately it is not in my own interest to point out good quality providers, because I am using 2 of those and would like to avoid too much noise around them. I also have area-51 for learning purposes and as a sort of a partial third back-up just in case. area-51 is a rather mediocre provider, although cheap and reliable. And if located outside of the countries I mentioned above you will be totally safe to watch without a VPN. And if ready to take small risks you can use area-51 even allover the world without a VPN. Since those folks will never, ever get caught. For the most time however you won’t notice any difference, because as I already wrote in a previous thread, they do not offer FHD.