Does UFUNCTION properties (like BlueprintReadWrite) impact performance?

Hi! I would like to know more about what is more optimized on runtime and I wonder if UFUNCTION properties like allowing blueprint access impact performance somehow.



This should have no impact on performance. There is no need to worry. The fields behind u property are only used to tell the compiler how to generate reflection data in. General h before compilation. The identification of these reflection data is only a way to control the blueprint permission and identification. If you really want to say performance, the system will save one more copy in the map of reflected data for each additional upproperty, but these are very cheap! Price.