I output a data texture in Houdini with accuracy of 7 significant digits. After importing it into UE, I set it to HDR format. I see that HDR format is described as FloatRGBA, but when it is used in practice, there is only a maximum of 4 significant digits.
This is my test, I created a solid color texture externally, this color has many decimal places, but only 4 places accuracy in UE
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