BQ40Z50-R2: SOC drops

Part Number: BQ40Z50-R2


Hi 

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After the battery is fully charged; When relaxed, SOC and RM will automatically decrease. I can solve this problem by disenable the RELAx_SMOOTH_OK bit,
Will closing this bit affect RM's estimation? Does this affect the accuracy of SOC?
Is there any other way to optimize this issue besides disabling RELAx_SMOOTH_OK bit?