I mentioned in my previous post very briefly about overcoming the 16 Texture Samples limit in your typical UE Material. This is frankly old news. There have been other posts around the internet forums about this. It's how I learned about the Sampler Source option. I just thought I'd chime in since it seemed like an important topic.
With your Texture Sample selected in your material graph, in the "Details" panel, set the "Material Expression" "Sampler Source" to "Shared: Wrap". See below.
Credit for the image to poster "Numbat" on the Unreal Engine Dev Community forums. The discussion can be found here
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