SOLUTION Ok! I found the real cause of the problem. The real cause is that Designer is exporting the Textures out at 16bit. Even if you set the Output Format to 8 Bits per Chanel it gives not a flying cluck. The real solution is annoying still a pretty hacky fix, but it works none the less. The solution is to put a node in…
I've had the same problem before! My solution was the same one, just place any node before your output and export it at a different bit rate. I wonder why it needs to be 8 bits to work correctly with UE4? Would love to know more about this.