Color gradients on British IPTV look like blocky steps instead of smooth transitions. Your IPTV reseller's British IPTV panel has posterization from low bit depth, and their IPTV panel doesn't apply dithering. The pattern that keeps showing up across British IPTV posterization complaints is this: an IPTV reseller using a cheap IPTV reseller panel has visible posterization. A British IPTV reseller with a professional IPTV panel uses higher bit depth or dithering. A real-world example: a user's British IPTV had blocky color transitions. His IPTV reseller said "it's the source." The user proved posterization was added. That said, ask your British IPTV seller: "Does your IPTV panel prevent posterization?" A smooth IPTV reseller will explain their dithering approach. Quick practical breakdown: a posterization-free IPTV panel uses 10-bit or dithering. Test with gradient test patterns during trial. In most cases, the British IPTV reseller whose gradients are smooth prevents posterization; the one with blocky transitions doesn't. Honestly, blocky color transitions on British IPTV made sunsets look like pixel art. The IPTV reseller's IPTV panel was reducing color resolution too aggressively.