Optimizing the cpu usage between chunk load & mob

Hi all,
I used to set the “max-chunk-sends-per-tick” & “max-chunk-gens-per-tick” lower,
to prevent someone moving fast in the world, and cause mobs act weird.(1.13.2, paper.yml config-version 17)
But I can’t found these items in 1.14.4 , paper.yml config-versoin 20.
Does new version balanced the cpu usage? Or how can I optimize that?