Cascade Particle System FixedTime Update Method?

Hi everyone,

Is FixedTime update method in cascade particle system works?

When i use this method and modify UpdateTime_FPS to see what take effect but nothing has changed, another developer also mentiond this(

And i search in the source( use keyowrds: SystemUpdateMode, EPSUM_FixedTime didn’t found functional reference of it.

Even though i’m not prepare to use this method in particles, i’m really curious about it.

Any help would be greatly appreciated!