version : http://prntscr.com/ml2lcu

Problem in video : https://youtu.be/UIAvdNfrMNg
Fps problem: http://prntscr.com/ml2o3z

Thanks to 1 cactus and the redstone circuit in the video, unlimited cactus can be obtained and The cactus in the video is being refreshed in 3 seconds, i have server growth rate settings in standard condition.

I reported this to paperspigot and asked me to forward it to you.

paperspigot issue : https://github.com/PaperMC/Paper/issues/1858