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UPROPERTY(EditAnywhere, AdvancedDisplay, Category="Audio",
Meta=(EditCondition="bLimitPlaysPerTick", ClampMin="0", UIMin="0"))
int32 MaxPlaysPerTick
This sets the max number of sounds played each tick. If more particles try to play a sound in a given tick, then it will play sounds until the limit is reached and discard the rest. The particles to discard when over the limit are not chosen in a deterministic way.