Redundant Sample times in Single Layer Water?

Hi everyone! When I use SLW model on PC platform (UE5.4), it seems that a same texture with the same UV will be sampled four times for a SLW node (one texture sample count for each pin) as shown in RenderDoc. However, it will only sample one time on Mobile platform preview. Is that supposed to happen, or did I miss anything necessary?

Thanks for any reply in advance!



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