How server friendly is the Grains of Infinity process?

My current setup involves placing/removing liquid pyrotheum (sets blocks around it on fire) and vacuuming up the grains. So that's a combination of flowing liquids, fire, and vacuum mechanics.

Pyrotheum is from another mod, and doesn't need to be placed and replaced to cause fire. Also the performance is simply the same as having a fire.

As @EpicSquid said, there is minimal impact beyond that of a normal fire being lit/extinguished.